Three ionic compounds are
(a) Sodium chloride
(b) Lithium nitride
(c) Magnesium oxide
What are ionic compounds ?An ionic compound in chemistry is a chemical complex made up of ions kept together by electrostatic forces known as ionic bonding. Although the molecule is mostly neutral, it contains positively charged ions known as cations and negatively charged ions known as anions.
As a general rule, ionic bonding can be seen in compounds where a metal bonds with a non-metal or a semi-metal. Those substances that exclusively contain non-metals or semi-metals with non-metals will exhibit covalent bonding and be categorised as molecular compounds.Learn more about Ionic compounds here:
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Based on the solubility observations, which of the following pairs of cations could be distinguished by the addition of sodium chloride to the solutions?iron and calcium.
Based on the solubility observations, barium & aluminum could be distinguished by the addition of sodium chloride to the solutions.
What happens when NaCl is added to a solution?The ionic link that held sodium and chloride ions together is broken when water molecules force the ions apart. The sodium and chloride atoms are encircled by water molecules after the salt compounds are separated. After that, the salt dissolves and forms a homogenous solution.In order to keep patients from dehydrating, sodium chloride, an important nutrient, is employed in healthcare. It is employed as a spice to improve flavor and as a food preservative. Additionally, sodium chloride is employed in the production of polymers and other goods. Additionally, it is used to de-ice sidewalks and roadways.Adding water to sodium chloride results in a physical change because no new product is created.Learn more about sodium chloride added to a solution refer to :
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calculate the index of hydrogen deficiency (ihd; also known as degree of unsaturation) for the following molecular formulas and place your response in the designated box. then answer part (d).
The Index of Hydrogen Deficiency (IHD) measures how many molecules of [tex]H_{2}[/tex] must be added to a structure to produce the corresponding saturated, acyclic species.
The degree of unsaturation is a calculation used in the analysis of the molecular formula of organic molecules to determine the total number of rings and bonds. In organic chemistry, a formula is used to help draw chemical structures.
A compound with an IHD of one may contain a ring or a double bond. An IHD of two indicates the possibility of a triple bond, as well as a combination of rings or double bonds. The hydrogen deficiency index provides insight into what may be going on in the structure of an unknown compound.
Degrees of Unsaturation = [tex]\frac{2C+2+N-H-X}{2}[/tex]
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TRUE/FALSE. the chemical equation must be balanced because molecules are neither created nor destroyed atoms are neither created nor destroyed busy work is good intellectual stimulation of the law of charge conservation
It is true that atoms and molecules cannot be created or destroyed, hence the chemical equation must be balanced. Chemical equations serve as symbolic representations of chemical reactions,
using the related chemical equation to identify the reactants and products. Chemical symbols and constituent chemical formulas are used to depict chemical reactions in chemical equations. The reactants in this equation are A and B, while the products are C and D.
A molecule is defined as a collection of two or more atoms held together by the attractive forces known as chemical bonds; depending on the context, the term may or may not include ions that satisfy this criteria. This are called molecules.
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Predict the products of the following acid-base reactions, and predict whether the equilibrium lies to the left or to the right of the reaction arrow. O2?(aq)+H2O(l)? Express your answer as part of a chemical equation. Identify all of the phases in your answer. O2?(aq)+H2O(l)? OH?(aq)+OH?(aq)
The product that is formed in the above given acid base reaction is the hydroxyl ions. And the equilibrium lies on the right of the reaction arrow.
An acid–base reaction is a type of chemical reaction that usually involves the exchange of one or more hydrogen ions, H+, between species that may be neutral (molecules, such as water, H2O) or electrically charged ones such as (ions, such as ammonium, NH4+; hydroxide, OH−; or carbonate, CO32−).
In the Bronsted-Lowry theory of acids and bases a strong base is a compound that is capable to deprotonate most other molecules that are containing an ionizable hydrogen as an acid. One of the most common strong bases are the group 1 alkali metal hydroxides such as NaOH.
From the above given equation we can say that the oxide anion is the conjugate base of the hydroxide ion, which itself is a strong base. Therefore the oxide anion is an even stronger base when compared to the hydroxide. It is such a strong ion that it will strongly remove protons from solvent water molecules in order to form hydroxide ions. This reaction is so favorable that it will go fully to completion on the product side.
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why was the quantum mechanical model proposed by schrodinger required to accurately predict the energy of electrons in multi-electron atoms?
From other principle it was difficult to find the energy and momentum of electron, that is why Schrodinger quantum mechanical model was proposed.
As per Heisenberg's uncertainty principle, the exact position and the momentum of an electron cannot be determined. So, the only probability of finding an electron at a position can be determined and it is that point represents the wave function of that electron.
The probability of finding an electron at a point within an atom is proportional to the square of the orbital wave function at that point. It is also known as probability density and is always positive.
The energy of an electron is quantized i.e., an electron can only have certain specific values of energy.
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why wouldn't the concorde travel lower
Supersonic flight over land is typically forbidden to minimize disruption to people on the ground. This meant that until it was over open water, Concorde could not operate at its maximum Mach 2 capability.
What is Concorde?The Concorde is a tailless aircraft with a drooping nose, an oval delta wing, and a narrow fuselage that allows for seating for 92 to 128 passengers.It's improbable that Concorde will ever fly for an airline again in a commercial capacity. The economics of reactivating Concorde and incorporating it into the fleet of a contemporary airline would be challenging to justify, even if the technical and regulatory concerns could be handled.Supersonic flight over land is usually not allowed to minimize the impact on people on the ground. This meant that Concorde could not operate at its maximum Mach 2 speed until it was over an open body of water.To learn more about Concorde refer to:
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Which of these descriptions is a property of a base?
A. feels slippery
B. tastes sour
C. reacts with metals
D. reacts with carbonates
Explanation:
A. feels slippery
I hope it's helpful for you
Answer:
Option (a)
Explanation:
Bases react with acids. When an acid and a base react, they form water and a substance called salt. Bases turn red litmus blue. Bases can change the structure of a protein. This property of base is what makes bases feel slippery. Soap is a base that, when it gets wet, feels very slippery on your skin.
If a student accidentally adds deionized water past the calibrated mark on the volumetric flask, he should.
If a student accidentally adds deionized water past the calibrated mark on the volumetric flask, he should discard the excess solution and prepare a new solution.
How are dilute solutions prepared?Diluted solutions of substances are prepared by placing a given volume of the stock solution in a volumetric flask, then deionized water is added to the determined final volume of the solution that will give the final diluted solution.
In order to determine the final volume of the solution to be prepared, the dilution formula is used.
The dilution formula is given below as follows:
C₁V₁ = C₂V₂
where
C₁ is the initial concentration of the stock solutionC₂ is the final concentration of the diluted solutionV₁is the original volume of the stock solutionV₂ is the final volume of the stock solutionDuring a dilution, care should be taken not to add the deionized water beyond the mark, else, a new solution must be prepared.
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which of the molecular orbital diagrams is correctly filled for the diatomic molecule r2? (each atom of r has six valence electrons in ns and np orbitals.)
Atomic orbitals are the areas to the left and right of the dashed lines. The possible molecular orbitals that they can form are indicated by the dashed lines.
Normally, in diatomic molecular orbitals, the atomic orbitals with the closest energy level can overlap with each other and form molecular orbitals. Therefore, the atomic orbitals generally tend to overlap one by one from the lowest potential energy to the highest potential energy. For example, in a homonuclear diatomic molecule, which means that both atoms are the same element, the same orbitals will overlap together and form molecular orbitals.
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What is the conflict of Marxism?.
The proletarian working class and the bourgeois ruling class are the two economic classes that make up society, according to the Marxist conflict theory.
What do you think "economic" means?The study of scarcity and how it impacts how resources are used, how goods and services are produced, how output and welfare rise through time, and then a wide range of other complex issues that are very essential to society are what appears to be the focus of economics.
What does economics' primary goal entail?Students who major in economics are more aware of their surroundings. Understanding other people, businesses, markets, and governments enables people to react more effectively to the challenges and possibilities that changing circumstances provide.
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What is the relationship between dipole moments and the magnitude of the partial charges?.
The relationship between dipole moments and the magnitude of the partial charges is they are directly proportional to each other.
The relationship between dipole moments and the magnitude of the partial charges is they are directly proportional to each other. the expression for the dipole moment is given as :
µ = q r
where,
µ = dipole moment
q = charge
r = distance between the charges
The bond dipole moment is expressed as follows:
µ = d
where,
µ = dipole moment
= magnitude of the partial charges + and -
d = distance of the partial charges + and -
Thus, The relationship between dipole moments and the magnitude of the partial charges is they are directly proportional to each other.
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following is a written and visual description of the hershey and chase experiment. complete the blank in step 1 as well as the two labels in the diagram.
Three phases made up Hershey and Chase's experiment: infecting, mixing, centrifugation .
What is an infection, for instance?An infection occurs when a germ damages a person after entering their body.The bacterium reproduces and establishes a colony These pathogenic tiny organisms are contagious and reproduce swiftly. Pathogens include, for instance, bacteria.
Why do infections occur?An infection happens when germs get into the body, grow there, and then start the body reacting .Three things must happen for an infection to occur: Source: Infectious (germ) agent habitats (e.g., sinks, surfaces, human skin) a vulnerable individual who serves as a germ entrance point.
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calculate the amount of heat needed to raise the temperature of 55.0 g of liquid water from 25c to 99 c
In order to raise temperature OF 55.0 g of liquid water from 25 c to 99 c, 4070 cal of heat must be applied.
mass of liquid. water is = 55.0 g.
initial temperature of the liquid. water is = 25°C.
final temperature of the liquid. water is = 99°C.
specific heat of liquid. water is = 1.00 cal/g °C.
q=mCvΔT
.Amount of heat required to. raise the temperature of the water is = 4070 cal.
Water temperature can be altered by heat transfer from sources such as the air, sunlight, other water sources, or thermal pollution. The quality of aquatic life and habitats is significantly influenced by water temperature. What species can survive and flourish in a body of water depends on the flow of heat and temperature variation. Air and water temperatures are influenced by a variety of environmental factors and human activities, such as: The increase in greenhouse gases from fossil fuel combustion, agricultural practices, and deforestation, which has led to an increase in global average air temperatures.
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What kind of reaction is NH4NO3?.
The statement claims that NH4NO3 goes through a breakdown phase in this kind of reaction.
What does the scientific term "reaction" mean?In a chemical reaction, one or more substances—also known as reactants—are changed into one or more additional substances—also known as products. Chemical elements or chemical compounds make up substances.
What are the different sorts of reaction?Combination, breakdown, single-replacement, twofold, and ignition are the five fundamental types of chemical reactions. You can classify a reaction into any of these groups by looking at the products and the reactants. Several categories will apply to some reactions.
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draw particulate representations that shows the differences between a solid, liquid and gas. particle motion, intermolecular forces and overall volume must be highlighted in the representations.
A solid has a distinct definite shape and volume, a solution has a distinct volume but no distinct shape, and just a gas lacks both.
What does chemistry mean by intermolecular?The attracting and repellent forces that develop here between molecules that comprise a substance are referred to as intermolecular forces (IMF), which is sometimes shortened. These forces operate as a mediator between a substance's individual molecules. The majority of matter's physical and mechanical characteristics are caused by intermolecular forces.
What intermolecular forces exist?The forces that exist between molecules are known as intermolecular forces. That makes it distinct from just an intramolecular force, or the force that exists within a molecule.
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What is the most important function of the Commission on election?.
The Election Commission of India's primary responsibility is to oversee free and fair elections throughout the nation. Direct Superintendent is the Indian Election Commission.
It oversees the organization of elections for India's President and Vice President as well as the legislatures and parliaments of each State. The most crucial duty of the Election Commission on Elections is the counting of the votes. The State Election Commissioners are autonomous of the Indian Election Commission and each has their own area of responsibility. A State Election Commissioner must be chosen by the State government to oversee the holding of elections for Panchayati Raj institutions.
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What happens to the reactivity of metals right to left in a period?.
Metals' reactivity declines from right to left on a periodic table. A tabular representation of the chemical elements is known as the periodic table, or periodic table of the (chemical) elements.
It is commonly regarded as an icon of chemistry and is utilized extensively in physics, chemistry, and other sciences. The chemical makeup and the circumstances surrounding the interaction determine the reactivity of metals in periodic table. The names of the metals and their degrees of reactivity with the aforementioned elements are listed in a table referred to as the "reactivity series" of metals. Metal Series Reactivity Chart. The reactivity of metals rises in the reactivity series from bottom to top.
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what is the hybridization of the central atom in each of the following? 1. [ select ] beryllium chloride 2. [ select ] nitrogen dioxide 3. [ select ] carbon tetrachloride 4. [ select ] xenon tetrafluoride
The hybridization of the central atom in each of the following is :
Beryllium chloride : Be is sp hybridized
Nitrogen dioxide : N atom is sp² hybridized
Carbon tetrachloride : C is sp³ hybridized
Xenon tetrafluoride : Xe is sp³d² hybridized.
The Beryllium chloride hybridization : The central atom is Be and is sp hybridized.
The Nitrogen dioxide hybridization : the central atom is N and N atom is sp² hybridized
The Carbon tetrachloride : C is sp³ hybridized. The Xenon tetrafluoride : Xe is sp³d² hybridized.
Thus, The hybridization of the central atom in each of the following is :
Beryllium chloride : Be atom is sp hybridized
Nitrogen dioxide : N atom is sp² hybridized
Carbon tetrachloride : C is sp³ hybridized
Xenon tetrafluoride : Xe is sp³d² hybridized.
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there are five points inside an equilateral triangle of side length 2. show that at least two of the points are within 1 unit distance from each other
A, B, two of the points are within 1 unit distance from each other.
Assume for the moment that three of the points are in the corner. If so, shade those sectors by drawing an arc with a radius of s/2 from D to E, D to F, and E to F. Areas where points cannot go are indicated by the shaded sections. Either the circle or the un-shaded region can receive points.
If you choose either point D as your next choice, you can still choose from points E and F and draw a circle with a radius of s/2 with D as its center.
The fifth point is impossible if you choose a different point in place of D, E, or F.
The fifth point will also be unachievable if the radius is increased beyond s/2.
D = s/2 is the result of three of the points considered to be the triangle's vertices.
D=s/2 for six points is a given. Simply choose A, B, C, D, E, and F.
So A, B, two of the points are within 1 unit distance from each other.
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how many grams of copper sulfate pentahydrate [cuso4*5h2o]are required to make 1.0000 liter of 2.0000 molar cuso4*5h2o? molecular weights:copper
To make 1.0000 litre of 2.0000 molar cuso4*5h2o, 499.44g of copper sulphate pentahydrate are needed. An inorganic substance called copper(II) sulphate is also referred to as copper sulphate.
whose inorganic name is copper sulphate pentahydrate and nH2O are formed, with n being in the range of 1 to 7. The most typical copper(II) sulphate hydrate is the pentahydrate (n = 5), a vivid blue crystal.
Molar mass of copper sulphate pentahydrate. 5H20 is equal to 63.55+ 32 + (16 * 4)+ 5(2 + 16) = 249.55 8 / mol.
4.5 20 = MXV for the Moles of Cuso
If M=2.000 and V=1L, then
Cuso4's mass is equal to one mole of cuso4.h2o plus cuso4.5's molar mass.
Cuso4 mass is equal to 2*249.55.
Cuso4 weighs 499.44g. Which is also a inorganic substance.
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nswer the following question. be careful to express your answers with the correct number of significant figures and proper units. data for gas y: barometric pressure from barometer 72.1 cm hg room temperature 22.6 oc volume of gas in syringe 133 ml mass of syringe with gas 90.26 g mass of evacuated syringe. 89.66 g what is the pressure of the gas in atmospheres?
The standard pressure at sea level averages 14.7 pounds for every square inch of air, according to SETRA. But while taking readings at home or listening to weather professionals, it’s typically measured in inches of mercury (inHg).
Such a device is known as a barometer. Normal atmospheric pressure is in the range of 1 atm = 101.325 kilopascal (kPa) = 760 millimeters of mercury (mm Hg or torr) = 14.7 pounds per square inch (psi). See the Resources for a conversion tool to work between these and other units of pressure.
A barometer is a scientific instrument that is used in a specific environment to measure air pressure. The pattern of pressure will predict short-term changes in the weather. In surface weather research, several measures of air pressure are used to help locate surface troughs, pressure systems and frontal boundaries. Barometers and pressure altimeters are the same instruments, but they are used for different purposes.
The altimeter is meant to be used at various heights, referring to the height of the corresponding air pressure, while the barometer is held at the same level and measures small changes in pressure caused by temperature and weather conditions.
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which of the following statement(s) is(are) true regarding the attractive force that holds sodium chloride in the solid state?
The attractive force that holds sodium chloride in the solid state because it is Electrostatic, it depends on the distance between the sodium and chloride.
Why is the attractive force that holds sodium chloride in the solid state electrostatic?The ions are held together by strong electrostatic forces. Ions with different charges attract each other. Positive Na+ ions attract negative Cl- ions. But since ions with the same charge repel each other, they repel other Na+ ions.Which type of bond hold this ?It is termed ionic bonding.Ionic compounds like sodium chloride are held together by ionic bonds. This type of bond is formed when oppositely charged ions attract each other. This attraction is similar to the attraction of her two opposite poles in a magnet. Ions or charged atoms are formed when atoms gain or lose one or more electrons.Can learn more about attractive forces from https://brainly.com/question/11212600
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g in each of the following sets, which atom or ion has a). the smallest ionization energy, b). electron affinity? a. cs, ba, la b. zn, ga, ge c. in, p, ar d. tl, sn, as
a) In the given set of the atom, the atom which has the smallest ionization energy is Cs and the atom which has the smallest electron affinity is Cs.
Ionization energy is the energy required to remove valence electron from the outermost shell. Ionization energy is going to increase from left to right as electron is added in the same shell and the nuclear charge is increased. The outermost electron is strongly bounded to the nucleus as we goes from left to the right. Hence, Cs has lowest ionization energy, followed by Ba and La.
Electron affinity is defined as the change in potential energy when an atom is added to neutral atom to form negative ion. Electron affinity is increased from left to right in the periodic table as nuclear attraction is increased. Hence, Cs has less electron affinity, followed by Ba and La.
b) In the given set of the atom, the atom which has the smallest ionization energy is Zn and the atom which has the smallest electron affinity is Zn.
Ionization energy is the energy required to remove valence electron from the outermost shell. Ionization energy is going to increase from left to right as electron is added in the same shell and the nuclear charge is increased. The outermost electron is strongly bounded to the nucleus as we goes from left to the right. Hence, Zn has lowest ionization energy, followed by Ga and Ge.
Electron affinity is defined as the change in potential energy when an atom is added to neutral atom to form negative ion. Electron affinity is increased from left to right in the periodic table as nuclear attraction is increased. Hence, Zn has less electron affinity, followed by Ga and Ge.
c) In the given set of the atom, the atom which has the smallest ionization energy is In and the atom which has the smallest electron affinity is In.
When we goes down the group, the ionization energy is decreased because distance between outer electron and nucleus is increased. Hence, it requires less energy to remove valence electron and In requires less energy to remove electron, followed by P and Ar.
Electron affinity also decreases down the group as electron is goes away from the nucleus. Hence, In has smallest electron affinity, followed by P and Ar.
d) In the given set of the atom, the atom which has the smallest ionization energy is Tl and the atom which has the smallest electron affinity is Tl.
When we goes down the group, the ionization energy is decreased because distance between outer electron and nucleus is increased. Hence, it requires less energy to remove valence electron and Tl requires less energy to remove electron, followed by Sn and As.
Electron affinity also decreases down the group as electron is goes away from the nucleus. Hence, Tl has smallest electron affinity, followed by Sn and As.
Therefore, Cs, Zn, In and Tl has smallest ionization energy and electron affinity.
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TRUE/FALSE. replacing the steel tank with one made from aluminum alloy increases likelihood that the tnak will undergo catastrophic failure at pressure p
The statement " Replacing the steel tank with one made from aluminum alloy increases likelihood that the tank will undergo catastrophic failure at pressure P " is false.
Catastrophic failure :
A complete, sudden, often unexpected breakdown in a machine, electronic system, computer or network is known as Catastrophic failure. Such a breakdown may occur as a result of a hardware event such as a crash, memory chip failure, disk drive or surge on the power line.
Hence, as aluminum alloys are comparably stronger than steel so they does not undergo Catastrophic failure at pressure P.
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Which is not a chemical mutagen?.
Ethyl alcohol is not a chemical mutagen.
Chemical mutagens are common methods for mutagenesis in a number of organisms, and in most genetic systems, they are the main way to introduce mutations into phenotype-based screens. Alkylating chemicals that cause point mutations in DNA, such as ethyl-methane sulfonate and N-methyl-N-nitrosourea, are the most often utilized chemical mutagens. Only option C is a physical mutagen while others are chemical mutagens provided in the question.
Alcohol causes cancer, birth defects, and mutations in humans. The first metabolite of ethanol, acetaldehyde, is mutagenic. The discovery that acetaldehyde causes sister-chromatid exchanges, chromosomal aberrations, and cross-links between DNA strands supports this.
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Complete question is:
Which is not a chemical mutagen?.
a. Nitrous acid
b. Magnus salt
c. Ethyl alcohol
d. Eosin
agno3(aq) and naf(aq) express your answer as a chemical equation. identify all of the phases in your answer. enter noreaction if no precipitate is formed.
It is ineffective for the detection of NaF since it doesn't react with NaF. AgNO3 + NaF = NaNO3 + AgF does not precipitate with fluoride ions.
How does one precipitate?To arrive at unexpectedly. an occasion that sparked war. to separate from a solution or suspension, or to cause separation. becoming a liquid or frozen and falling as rainy weather after changing from a vapor.
What is the purpose of precipitate?Precipitation is a common technique for removing metal ions from solution. For example, silver ions found in a solution of a salts, such as potassium iodide, are precipitated by adding chloride ions, which are, for example, present in a solution of sodium. Silver is then formed when the positive ions and platinum ions combine.
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how many ml of 0.5 m koh should be added to 3.11 g of oxalic acid before diluting with water to 500 ml to prepare a solution with a ph of 4.6?
The volume in ml of 0.5 m koh should be added to 3.11 g of oxalic acid before diluting with water to 500 ml to prepare a solution with a ph of 4.6 is 69 mL.
The calculation for the formula is done by C1V1=C2V2.The concentration of oxalate is = 0.069 M = C2500 ml = V2s0 V1 = 69 ml.Read more about volume :
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the 5p orbitals fill immediately after the 4d orbitals and immediately before the 6s based on: (select all that apply)
The 5p orbital fills immediately after the 4d and immediately before the 6s orbital. True.
Orbital electron confirgurationThe orbital electron configuration is the arrangement of electrons via the available orbitals in the atoms of elements. This arrangement follows certain rules. These include:
Aufbau principle: this states that low energy level orbitals are first filled before higher energy level orbitals.Hund's rule: states that electrons are distributed singly in orbitals with more than one degenerate before pairing starts.Following these rules, the order of filling the different orbitals that exist, including the degenerates is: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p. 6s, etc.
In other words, the 5p orbital comes after the 4d orbital but before the 6s orbital. This means that the 5p orbital will be filled with electrons immediately after the 4d orbital and before the 6s orbital.
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What is the significance of the oxygen revolution?.
The oxygen revolution led to both a significant restructuring of what could live where and a chance for the appearance in much more locations/niches.
How much oxygen is there?The sole sort of atom in oxygen makes it a chemical element, which is a substance. An oxygen atom has eight protons in its nucleus, as indicated by its atomic number of 8, which is represented by the letter O in its official chemical formula.
Air or a gas: which is oxygen?Oxygen is a transparent, tasteless, and cloud of gas that is important across all living creatures. It is ingested by animals, who then convert it to carbon dioxide, which is then used by plants to create new carbon and release oxygen back into the atmosphere.
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if this ratio is much less than unity, the recoil of the atom can be neglected in the emission process. is the recoil of the atom more important for small or large atomic masses?
The recoil of the atom is more important for small atomic masses.
What is recoil?
Recoil is the backward thrust created when a gun is fired. It is also referred to as knockback, kickback, or simply kick. Technically speaking, the projectile's and the exhaust gases' (ejecta's) forward momentum will be mathematically matched out by an equivalent and opposing momentum exerted home upon the gun as a result of Newton's third law, which states that any force needed to accelerate anything will elicit an equal but opposite reactionary force. In hand-held small arms, this same recoil momentum will eventually be transferred to the ground, but it will do so through the shooter's body, producing an audible impulse that is frequently referred to as a "kick."
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