A conjugate base is a species that is created by taking a proton out of an acid since, in the opposite reaction, it might help a hydrogen ion.
The conjugate acid of sulphate (SO42−) is hydrogen sulphate (HSO42−)The conjugate acid of OH− is H2O because when OH− gains a hydrogen ion, it forms H2O.Cl − Chloride ion HCl Hydrogen chlorideF–Choose...HF Water HCl HI Hydronium ion Bisulfate ion Sulfuric acidAccording to the Bronsted-Lowry acid-base theory, a conjugate acid is a chemical molecule that is created when an acid donates a proton to a base; in other words, it is a base that has had a hydrogen ion added to it, as in the opposite reaction, the base loses a hydrogen ion.
The conjugate base of some acids may also be acidic since they have the capacity to liberate a few protons.
According to Bronsted-concept Lowry's of acids and bases, a conjugate acid-base pair consists of two compounds that differ most from one another when a proton (H+) is present.
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the term for the branch of science that studies atoms is
The branch of physics known as "atomic physics" focuses on the study of atoms as self-contained systems made up of electrons and nuclei.
In general, the term "atomic physics" refers to the study of the structure of atoms and the interactions between atoms. The arrangement of electrons around the nucleus and the mechanisms by which this arrangement changes are major topics of interest. Unless specifically stated to consist of ions and neutral atoms, the term "atom" is meant to include ions.
Atomic physics is a term that can refer to nuclear energy and nuclear weapons.
Atomic physics, which treats an atom as a system consisting of a nucleus and electrons, differs from nuclear physics, which studies nuclear reactions and the unique properties of atomic nuclei.
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______ The aggregation of nonpolar molecules or groups in water is thermodynamically favorable due to the
A. increased entropy of the water molecules.
B. decreased enthalpy of the system.
C. increased entropy of the nonpolar molecules when they associate.
D. very strong van der Waals forces among the nonpolar molecules or groups.
What is the pH of an acetate/acetic acid solution (pKa= 4.7) in which acetic acid is 80% in its deprotonated form?
The aggregation of nonpolar of the molecules or groups in water is thermodynamically favorable is due to the increased entropy of the water molecules. The correct option is C.
The Entropy is the quantitative measure of the disorder or the randomness in the system or the element. In the thermodynamics, the entropy or the hydrophobic effect is the free energy change of the water enclosing the solute. Therefore , the existing negative free charges will enhances the effect of the hydrophilicity and thus, the aggregation of the non-polar molecules.
Thus, the increased in the entropy of the water molecules will effect the aggregation of the nonpolar molecules or the groups in the water is thermodynamically favorable. Therefore, the option C is correct.
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- Addition & Subtraction
TY
Perform the following
mathematical operation, and
report the answer to the
appropriate number of
significant figures.
15.222 - 3.88 = [?]
Enter
Answer:
Below
Explanation:
Your answer should have the same number of S.D. as the element with the least number of S.D. ....in this case 3.88 has THREE S.D. so your answer should be rounded to three S.D.
15.222 - 3.88 = 11.342 = ~ 11.3 to three sig dig
You add 15 ml of 0.15 M NaCl to a container containing 15 ml of 0.15 M HCl. What is the pH of the solution?A) acidB) baseC) neutral
The pH of the resulting solution upon adding 15 ml of 0.15 M NaCl to a container containing 15 ml of 0.15 M HCl is; Choice A; Acid.
What would the pH of the resulting solution be?As evident in the task content and by convention; the 15 ml of 0.15 M HCl as given is acidic.
Hence, since the NaCl solution usually has a neutral pH.
Ultimately, when the 15 mL of 0.15 M NaCl is added to the HCl solution, the pH of the resulting solution remains acidic.
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in a ______ reaction, one element is kicked out or replaced by another element in the reaction.
In a substitution reaction, one element is kicked out or replaced by another element in the reaction. This type of reaction involves the replacement of an atom or group of atoms in a molecule with a different atom or group of atoms.
Substitution reactions can occur in various types of compounds, including organic molecules and inorganic compounds. For example, in organic chemistry, substitution reactions are common in reactions involving alkyl halides, where a halogen atom is replaced by a nucleophile (an atom or molecule that donates a pair of electrons to form a new bond). In inorganic chemistry, substitution reactions can occur in reactions involving metal ions, where one metal ion is replaced by another metal ion in a complex.
Overall, substitution reactions are important in many areas of chemistry and have many practical applications, such as in the synthesis of drugs, polymers, and other useful compounds.
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The equilibrium constant is a special value of the reaction _________ that occurs when reactant and product concentrations are at their _____________ values.
4. The lake water changes color rapidly on exposure to air. Suggest a factor that may affect the
speed of the reaction in Blood Falls. This question is not in the article directly. Give a reasonable
guess, that shows thought and effort.
A factor that might affect the speed of reaction of the water in Blood Falls is the concentration of iron in the water.
How can the speed of reaction of the lake water be affected ?Blood Falls is located in the McMurdo Dry Valleys of Antarctica, where a subglacial lake with a high concentration of iron mixes with oxygenated seawater to create the characteristic reddish color of Blood Falls.
The speed of this reaction may be influenced by the amount of iron present in the water, as well as the availability of oxygen to react with the iron. If the concentration of iron is high, the reaction may proceed more quickly than if the concentration is lower.
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what is mass of hydrogen
Every element's atomic mass is equal to the sum of its protons and neutrons. AMUs, or atomic mass units, are used to measure and represent atomic mass. Hence, atomic mass of hydrogen is 1.66×10−24g
What is hydrogen?With only one electron and being the first and lightest element in the periodic table, hydrogen has an atomic number of 1. A hydrogen atom in isolation only has one proton, one electron, and no neutrons.Protons and neutrons together make up an element's atomic mass. The mass of a hydrogen atom is 1.67 1024 g, or 1.007 u, which is the mass of one proton.
Yet this mass is similar to the 1.66 1024 g atomic mass unit.Hydrogen has a mass of 1.007 amu because this factor can be expressed as 1.007 amu.
As a result, hydrogen has an atomic mass of 1.007 amu, or 1.66 1024 g.
The three isotopes of hydrogen are protium, deuterium, and tritium. Protium has an atomic mass of 1.007 amu since it only contains one proton and one electron. Deuterium has an atomic value of 2.014 amu because it has one proton and one neutron, whereas tritium has an atomic mass of 3.021 amu because it has one proton, one electron, and two neutrons. Average atomic mass is taken into account for isotopes.
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What is dipole-dipole interaction example?
Some examples of a dipole–dipole interaction can be that interaction which is formed between polar molecules, such as hydrogen chloride (HCl), carboxylic acids (i.e., acetic acid), and amino acids.
Dipole–dipole interactions are defined as weak interactions which arises from the close association of permanent or induced dipoles. Collectively these forces are usually known as Van der Waals interactions. Generally, proteins contain a large number of these interactions, which vary considerably in strength.
Hydrogen chloride (HCl), hydrogen fluoride (HF), and water are all common examples of dipole-dipole forces. HCl (hydrogen chloride) is considered as a permanent dipole. Basically, the chlorine atom has a partially negative charge, while the hydrogen atom has a partially positive charge.
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How many signals would you see in the alkene/aromatic region of a 13C NMR spectrum of the following molecule?
a. 1
b. 2
c. 3
d. 4
e. 5
The correct answer is (a) 1. The total number of signals in the alkene/aromatic region of the 13C NMR spectrum of the given molecule would be 2: one for the alkene carbons and one for the aromatic carbons. The correct answer is (a) 1.The given molecule contains two distinct types of carbon atoms: those in the alkene functional group and those in the aromatic ring.
In the alkene functional group, the carbons are sp2-hybridized and are expected to have a chemical shift range of around 120-140 ppm in the 13C NMR spectrum. Since there are two carbon atoms in this functional group, we would expect to see one signal for the alkene carbons.
In the aromatic ring, the carbon atoms are also sp2-hybridized and are expected to have a chemical shift range of around 120-160 ppm in the 13C NMR spectrum. Since there are four carbon atoms in the aromatic ring, we would expect to see one signal for the aromatic carbons.
Therefore, the total number of signals in the alkene/aromatic region of the 13C NMR spectrum of the given molecule would be 2: one for the alkene carbons and one for the aromatic carbons. The correct answer is (a) 1.
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In the following acid-base reaction,
CH3NH2 is the
CH3NH2(g) + H2O(1)
→ CH3NH3(aq) + OH¯(aq)
Base
Acid
Conjugate base
In the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex](aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_2[/tex](g) is the base.
What is acid-base reaction?The exchange with one or maybe more hydrogen ions, H+, among species that could be neutral (molecules like water, H2O, or acetic acid, CH3CO2H), as well as electrically charged (ions like ammonium, NH4+, hydroxide, OH, or carbonate, CO32), is what is known as an acid-base reaction.
It also covers equivalent behavior of acidic ions and molecules (aluminum chloride, AlCl3, and the silver ion AG+) that do not give hydrogen ions. In the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex](aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_2[/tex](g) is the base.
Therefore, in the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex](aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_2[/tex](g) is the base.
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Transcribed Image Text:What is the formal charge of an oxygen atom that forms three bonds and has one lone pair? -2 -1 +1 +2
It will have a formal charge of 1+ if it has three bonds in addition to one lone pair, like the hydronium ion does. When an oxygen atom contains one link, two lone pairs, and one unpaired (free radical) electron, it has a formal charge of zero and can also exist as a radical.
When an oxygen atom contains two bonds and two lone pairs, it is commonly said to have a formal charge of zero. Alternative configurations include oxygen with 3 lone pairs and 1 bond with a formal charge of 1+, and oxygen with 3 bonds and 1 lone pair and a formal charge of 1.With three bonds, what charge does oxygen have. Typically, oxygen has two bonds; nevertheless, on occasion.
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The Formal charge on the oxygen atom will be +2.
The formal charge of an atom is the difference between the number of valence electrons in the free atom and the number of electrons assigned to that atom in a Lewis structure.
In the structure, the oxygen atom is bonded to three hydrogen atoms and has one lone pair of electrons. To calculate the formal charge of the oxygen atom, we first need to determine the number of valence electrons in an oxygen atom, which is 6.
To assign electrons to the oxygen atom in the Lewis structure, we can follow the octet rule, which states that atoms tend to gain, lose, or share electrons in order to achieve a full outer shell of eight electrons (except for hydrogen, which only needs two). In the Lewis structure shown above, the oxygen atom has four valence electrons assigned to it: one from each of the three bonds and one from the lone pair. Therefore, the formal charge on the oxygen atom is:
Formal charge = valence electrons - assigned electrons
= 6 - 4
= +2
Therefore, the formal charge of the oxygen atom in this Lewis structure is +2.
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when filling a buret for a titration, first adjust the buret in the clamp so that ____ then, _____to add the titrant into the buret. the titrant should be filled ____.
When filling a buret for a titration, it is important to first adjust the buret in the clamp so that it is level and vertical. The titrant should be filled to just above the calibration mark at the zero point on the buret.
This is crucial to ensure that the titrant will be delivered accurately and consistently during the titration. A buret that is tilted or not level could result in inaccurate readings or inconsistent delivery of the titrant.
After adjusting the buret in the clamp, the next step is to add the titrant into the buret. This is typically done using a funnel to avoid spilling or splashing. It is important to add the titrant slowly and carefully to avoid air bubbles or excessive foaming, which could also affect the accuracy of the titration.
Any excess titrant should be drained out until the bottom of the meniscus is exactly at the calibration mark. This will ensure that the buret is filled accurately to the correct volume, allowing for precise and consistent delivery of the titrant during the titration.
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What specific accommodations or technological advancements will be needed to make the mission successful?
Specific accommodations and technological advancements needed for a successful moon mission include radiation shielding, advanced life support systems, reliable communication systems, and improved propulsion technology.
Why is radiation shielding important for a moon mission?Radiation shielding is important for a moon mission because the moon has little to no atmosphere, which means that astronauts are exposed to high levels of radiation from cosmic rays and solar flares. Therefore, effective shielding is needed to protect the crew and equipment from radiation damage.
What is an example of improved propulsion technology that could benefit a moon mission?One example of improved propulsion technology that could benefit a moon mission is the development of electric propulsion systems, which are more efficient and can provide longer periods of thrust than traditional chemical rockets. Electric propulsion can also reduce the amount of fuel needed for a mission, which can lower costs and increase payload capacity.
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what process produced the purple garnet crystals in the rock in photo g? choose one: a. solid-state diffusion b. freezing of molten rock c. biomineralization d. diffraction
Solid-state diffusion is a process that produce the purple garnet crystals in the rock. Therefore, the correct option is option A.
What is purple garnet crystals?Garnet may be found as purple stones as well as its most common color, red. The garnet types known as pyrope and spessartine are where the purple crystals are found. The commonest of all garnets, blue garnet, changes color to purple when illuminated by an incandescent bulb.
At prices up to $3,000 per carat, this colour scheme garnet is one of the most costly purple gemstones. January's birthstone is garnet generally. Garnet is the birthstone for Aquarius in astrology. Solid-state diffusion is a process that produce the purple garnet crystals in the rock.
Therefore, the correct option is option A.
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the functional group of the amino acid histidine has a pka of approximately 6.0. what would you expect would be true of a histidine residue in an enzyme in a solution with ph 4.0?
At a pH of 4.0, the environment would be acidic and the histidine residue would be protonated because the pH is lower than the pKa of its functional group (which is approximately 6.0).
The ionisation state of amino acid residues, particularly histidine, can be critical for enzyme performance. The histidine residue's protonation status can alter its capacity to interact with other residues or substrates in the enzyme's active site. As a result, a histidine residue in an enzyme at a low pH of 4.0 would most likely be protonated, altering its catalytic characteristics and perhaps affecting the enzyme's overall activity.
Amino acids are chemical compounds that are used to construct proteins. There are 20 different amino acids found in proteins, each with its own side chain that defines its chemical and physical properties.
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50 POINTS!! CAN SOMEONE PLEASEEEE HELP ME do this for my chemistry class please i need it done asap!! to give me the answers your probably going to have to write it on paper then attach the picture to your answer!! thank you so much!! <3
Answer:
lewis structures :
Explanation:
4 electrons
6 electrons outer shell
3 outer shell
2 outer shell
7 outer shell
1 outer shell.
v
identify the acid associated with each conjugate base.1.. SO42- __________2. I- __________3. OH- ___________4. F- _________5. CI- _________
The acid associated with each conjugate base is: conjugate acid of SO₄²⁻ is H₂SO₄⁻, conjugate acid of I- is HI , conjugate acid of OH⁻ is H₂O, conjugate acid of F⁻ is HF, and the conjugate acid of Cl⁻ is HCl (hydrochloric acid).
A conjugate base are those species which remains after an acid has donated a proton (H⁺ ion). In other words, a conjugate base is formed when an acid loses a proton. For example, in the reaction:
HCl + H₂O → H₃O⁺ + Cl⁻
HCl is an acid that donates a proton to water to form the hydronium ion (H₃O⁺). The chloride ion (Cl⁻) is the species that remains after HCl loses its proton and is therefore the conjugate base of the acid HCl. Similarly, water is the conjugate base of the hydronium ion in this reaction.
The conjugate base of H₂SO₄ is SO₄²⁻, which can accept a proton to reform H₂SO₄. Therefore, the associated acid is H₂SO₄.
The conjugate base of HI is I⁻, which can accept a proton to reform HI. Therefore, the associated acid is HI.
The conjugate base of H₂O is OH⁻, which can accept a proton to reform H₂O. Therefore, the associated acid is H₂O.
The conjugate base of HF is F⁻, which can accept a proton to reform HF. Therefore, the associated acid is HF.
The conjugate base of HCl is Cl⁻, which can accept a proton to reform HCl. Therefore, the associated acid is HCl.
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The movement of what ion is reflected in the rising phase of the action potential? Choose the correct option. A) Inward Na+ B) Outward K+ C) Outward Na+ D) Inward K+
The movement of A) Inward Na+ ion is reflected in the rising phase of the action potential.
An action potential is an accelerated sequence of voltage changes across a membrane. At any given time, the tissue voltage, or potential, would be determined by the relative magnitude relation of ions, the company would benefit from intracellular, as well as the flowability of each ion.
Action potentials (the electrical impulses which thus send signals throughout your body) are nothing but a transitory shift in the membrane potential of the neuron caused by ions flowing in and out of the part of the brain.
An action potential seems to be a swift sequence of voltage changes across a membrane. At any given time, the membrane voltage, but rather potential, is dependent on the relative percentage of ions, ds14 to intracellular, as well as the permeation of each ion.
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What intermolecular forces are present in pure samples of both CH₃CH₂OH and CH₃CH₂NH₂?
A) Dispersion forces, dipole-dipole forces, and hydrogen bonding.
B) Dipole-dipole forces only.
C) Dipole-dipole forces and hydrogen bonding.
D) Dispersion forces and dipole-dipole forces
In pure samples of both CH3CH2OH and CH3CH2NH2, differences, dipole-dipole forces, or intermolecular hydrogen bonding forces all exist.
The correct answer is A
Why do you use the term "hydrogen bonding"?A hydrogen atom that is sandwiched between two other atoms and has a high affinity to electrons interacts with them to form a link that is stronger that
What guidelines apply to hydrogen bonds?For hydrogen bonds to form, two conditions must be met. Hydrogen Bonding Has to Meet Two Conditions: A electronegative atom is linked to hydrogen in the first molecule (N,O,F). On a tiny, very electronegative atom in the second molecule, there is a single pair of electrons.
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Describe a model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride)
Zinc + Hydrochloric Acid - Zinc Chloride and Hydrogen Gas
Zn + 2HCI ZnCl₂ + H₂
How is mass conserved in the reaction?
The reaction can be modeled and shown that mass is conserved using a balanced chemical equation.
Modeling chemical reactionsThe reaction of zinc metal and hydrochloric acid can be modeled using a balanced chemical equation, which shows the reactants on the left-hand side of the equation and the products on the right-hand side. The balanced chemical equation for the reaction is:
Zn + 2HCl --> ZnCl₂ + H₂
The conservation of mass is demonstrated in the reaction by the law of conservation of mass, which states that the mass of the reactants must be equal to the mass of the products in a chemical reaction.
In this reaction, the total mass of the reactants, which is the mass of the zinc and the mass of the hydrochloric acid, is equal to the total mass of the products, which is the mass of the zinc chloride and the mass of the hydrogen gas. This demonstrates the conservation of mass in the reaction.
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what are the signs for the changes in enthalpy for the three steps involved in forming a solution?
The enthalpy changes associated with formation of a solution can be divided into three steps:
1.Breaking of intermolecular forces: This is the enthalpy change associated with breaking the intermolecular forces between solute molecules, such as van der Waals forces, and between solvent molecules. This enthalpy change is usually an exothermic process, meaning that energy is released when the molecules interact and form a solution. The magnitude of the enthalpy change in this step is dependent upon the strength of the intermolecular forces between the molecules.
2.Mixing of the two components: This is the enthalpy change associated with the mixing of the two components (solute and solvent). This enthalpy change is usually endothermic, meaning that energy is absorbed when the molecules mix together into a solution. The magnitude of the enthalpy change in this step is dependent upon the differences between the two components.
3.Solution formation: This is the enthalpy change associated with the formation of solute-solvent interactions. This may either be an exothermic or endothermic process, depending upon the types of interactions formed. The magnitude of the enthalpy change in this step is dependent upon the strength of the solute-solvent interactions.
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Each pair of transition points in phase change occur at the same temperature. What are these transition points, and which ones pair together?
These transition points, and the ones pair together are as follows :
Melting - solid to gasFreezing - liquid to solidBoiling - liquid to gascondensation - gas to liquidThe each pair of the transition points in the phase change will occur at the same temperature. These occur because of the phase transition of the water has been taken place.
1) Melting is the solid to gas
2) Freezing is the liquid to solid
3) Boiling is the liquid to gas
4) condensation is the gas to liquid
The transformation of the matter from the one phase to the another phase due to the heat transfer is called as the phase transition.
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Lab Solubility Student Guide (NEED ANSWERS)
Informational Goals Do a lab procedure to investigate the connection between temperature and solubility.
What's the current temperature?According to temperature, heat energy will naturally move from a hotter body one with a higher temperature to a colder object one with a lower temperature.
The velocity of these particles likewise increases as the temperature rises. A thermometers or a digital thermometer is used to determine the temperature. The SI unit for temperature, oC, is symbolised by the symbol ′T′. The Celsius scale, the Fahrenheit scale, and the Kelvin scale are the three scales that are most frequently used to measure temperature.
A Kelvin scale is what?This scale too is known as the SI temperature scale. Most of the scientific community uses it. It was created to pay tribute to renowned physicist Lord Kelvin.
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Answer:
These are the answers and the scatterplot
Explanation:
The 1st pdf is from someone else ("998129") and I did the scatterplot since it asks for it at the bottom of the student guide
-Edge 2023
when a solution of a2 is mixed with one containing c- ions, the color remains green. is a2 a better oxidizing agent than c2? question 3 options: yes no
When a solution of a2 is mixed with one containing c- ions, the color remains green therefore a2 is not a better oxidizing agent than c2.
What is an Oxidizing agent?This is a substance in a redox chemical reaction that gains or "accepts"/"receives" an electron from a reducing agent and is any substance that oxidizes another substance.
In this scenario we should note that:
When C is mixed with A-, the color changes from red to green. A- is oxidized while C is reduced. C > A in oxidizing power.When C is mixed with B-, the color does not change. C is stronger than A but C is weaker than B in oxidizing power which means that the arrangment is B > C > A.Read more about Oxidizing agent here https://brainly.com/question/14041413
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What kind of landform is created at divergent plate boundaries
The kind of landform which are created at divergent plate boundaries are rift valleys and mid-oceanic ridges.
What are landforms?A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins.
Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure, and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features.
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Quickest right answer will get brainliest answer !!
2Na+ Cl₂ → 2NaCl
Which set of reactants will be the
most efficient (least wasteful of
materials) for the reaction?
(look at picture)
The most efficient set of reactants for this reaction would be 2 moles of Sodium ([tex]2Na[/tex]) and 1 mole of Chlorine gas ([tex]Cl_2[/tex]). Using any other amounts of reactants would result in leftover reactants, which would be wasteful.
What do reactants mean?Reactants refer to the substances or compounds that are involved in a chemical reaction and undergo a transformation to produce new substances or compounds known as products. In other words, reactants are the starting materials of a chemical reaction.
During a chemical reaction, reactants interact with each other and undergo a rearrangement of their atoms, resulting in the formation of new substances with different chemical and physical properties. The chemical reaction can be represented by a chemical equation, which shows the reactants on the left-hand side and the products on the right-hand side.
For example, in the chemical equation:
[tex]2H_2 + O_2[/tex] → [tex]2H_2O[/tex]
[tex]H_2[/tex] and [tex]O_2[/tex] are the reactants, and [tex]H_2O[/tex] is the product. In this case, hydrogen gas ([tex]H_2[/tex]) and oxygen gas ([tex]O_2[/tex]) react with each other to form water [tex](H_2O)[/tex] through a chemical reaction.
Step 1: Write the unbalanced chemical equation for the reaction, using the chemical symbols for the reactants and products:
[tex]Na + Cl_2[/tex] → [tex]NaCl[/tex]
Step 2: Balance the equation by adjusting the coefficients to make sure that the number of atoms of each element is the same on both sides of the equation:
[tex]2Na + Cl_2[/tex] → [tex]2NaCl[/tex]
Now the equation is balanced, and it shows that 2 moles Na and 1 mole [tex]Cl_2[/tex] are needed to produce 2 moles [tex]NaCl[/tex].
Therefore, using any other amounts of reactants would result in leftover reactants, which would be wasteful.
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If you were to compare (i) the mass of a car with a full tank of gas to (ii) the mass of the same car with an empty tank of gas plus the mass of the exhaust fumes produced while the car burned the gas, would mass (i) and mass (ii) be different or would they be equal?
Mass (i) and mass (ii) would be equal as according to the law of conservation of mass, the total mass of a closed system must remain constant over time, meaning that mass cannot be created or destroyed, only transformed from one form to another.
What is mass?Mass is a measure of the amount of matter in an object. It is a fundamental property of matter, and it is usually measured in kilograms (kg) or grams (g). Mass is different from weight, which is a measure of the gravitational force acting on an object due to its mass. The mass of an object remains the same regardless of its location or the presence of other objects, while its weight may change depending on the strength and direction of the gravitational force acting on it. In physics, mass is an important concept that plays a role in many fundamental laws and equations, such as Newton's laws of motion and Einstein's theory of relativity.
Here,
In the case of a car burning gasoline, the mass of the gasoline is converted into other forms of matter, such as exhaust fumes and heat, but the total mass of the system remains the same. Therefore, the mass of the car with a full tank of gas is equal to the mass of the same car with an empty tank of gas plus the mass of the exhaust fumes produced while the car burned the gas. However, it is worth noting that the distribution of mass within the system may be different in each case, with the car having a higher center of mass when it is fully fueled compared to when it has an empty tank.
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The energy produced by the snack in an
experiment is calculated to be 14,928 J/g.
What is the energy of the snack
in Calories/gram?
Can someone tell me why 3.56 is the correct answer?
Rounding to three significant figures, the answer is 3.57 cal/g. It's possible that the answer given as 3.56 cal/g is a rounding error or a slightly different calculation, but the correct answer based on the given information is 3.57 cal/g.
What is Energy?
Energy is a property of objects or systems that can be transferred to other objects or systems, or converted into different forms. It is a scalar physical quantity that can be defined as the ability to do work or produce heat. Energy exists in many forms, such as mechanical, thermal, electrical, chemical, nuclear, and electromagnetic, and can be transformed from one form to another. The SI unit of energy is the joule (J), but other units such as the calorie (cal) or the electronvolt (eV) are also commonly used in different contexts.
To convert energy from joules to calories, we need to use the conversion factor 1 cal = 4.184 J. Therefore, we can calculate the energy of the snack in calories per gram as:
Energy in cal/g = (Energy in J/g) / (4.184 J/cal)
Plugging in the given value, we get:
Energy in cal/g = 14928 J/g / 4.184 J/cal
Energy in cal/g = 3566.87 cal/g
Rounding to three significant figures, the answer is 3.57 cal/g. It's possible that the answer given as 3.56 cal/g is a rounding error or a slightly different calculation, but the correct answer based on the given information is 3.57 cal/g.
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Answer:3.56
Explanation: works on acellus
a mixture of elements that has metallic properties is called___
Answer:
it is called a alloy ex carbon steel
Explanation:
