Below are the equations and those that have been balanced
Sr + O2 ➡️ SrO Na + O2 ➡️ Na2O 2K + Cl2 ➡️ 2KCl Ca + F2 ➡️ CaF2 2Mg + O2 ➡️ 2MgO What is a balanced chemical equation?A balanced chemical equation means that the number of atoms of each element is the same on both sides of the equation. In other words, the mass and charge are conserved in the reaction, and no atoms are created or destroyed. Balancing the equation involves adjusting the coefficients to ensure that the number of atoms of each element is equal on both sides.
From the question given,
Sr + O2 ➡️ SrOThe balanced equation will be:
2Sr + O2 ➡️ 2SrO
Na + O2 ➡️ Na2OThe balanced equation will be:
4Na + O2 ➡️ 2Na2O
2K + Cl2 ➡️ 2KClThe balanced equation will be:
2K + Cl2 ➡️ 2KCl
Ca + F2 ➡️ CaF2The balanced equation will be:
Ca + F2 ➡️ CaF2
2Mg + O2 ➡️ 2MgOThe balanced equation will be:
2Mg + O2 ➡️ 2MgO
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How do you find the boiling point given vapor pressure?
The boiling point of a liquid can be estimated from its vapor pressure using the Clausius-Clapeyron equation.
This equation relates the vapor pressure of a liquid to its boiling point and can be expressed as:
ln(P2/P1) = -ΔHvap/R * (1/T2 - 1/T1)
where P1 is the vapor pressure at temperature T1, P2 is the vapor pressure at temperature T2, ΔHvap is the enthalpy of vaporization, R is the gas constant, and ln denotes the natural logarithm.
To find the boiling point, you would need to know the vapor pressure at two temperatures and the enthalpy of vaporization. Rearranging the equation to solve for the boiling point, you would get:
T2 = -ΔHvap/R * (1/(ln(P2/P1)) + 1/T1)
Substituting the values of P1, P2, and T1 into the equation and solving for T2 will give you an estimate of the boiling point. Note that this equation is an approximation and assumes that the enthalpy of vaporization is constant over the temperature range of interest.
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the force of attraction of binding oppositely charged ions together is called?
The force of attraction that binds oppositely charged ions together is called an electrostatic force or an ionic bond.
This type of bond results from the transfer of electrons from one atom to another, resulting in the formation of ions with opposite charges. The positively charged ion (cation) is attracted to the negatively charged ion (anion), and this attraction results in the formation of an ionic bond. Ionic bonds are typically strong and can be found in many types of compounds, including salts and minerals.
The electrostatic force is an important fundamental force in nature and plays a crucial role in many physical and chemical phenomena, such as the binding of atoms to form molecules, the behavior of charged particles in electric and magnetic fields, and the behavior of materials with electrical conductivity.
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the part of a synapse to which the contents of synaptic vesicles bind is called the
The part of a synapse to which the contents of synaptic vesicles bind is called the "postsynaptic receptor".
The neurotransmitters diffuse across the synaptic cleft and bind to specific receptor proteins on the postsynaptic neuron, located on the postsynaptic membrane of the synapse. The binding of the neurotransmitters to the receptor proteins triggers a response in the postsynaptic neuron, which can lead to the generation of an action potential and the transmission of the signal to the next neuron in the neural circuit.
The postsynaptic receptors are specific to different neurotransmitters, and the binding of a neurotransmitter to its corresponding receptor can have either an excitatory or inhibitory effect on the postsynaptic neuron, depending on the receptor type and the characteristics of the neurotransmitter. The postsynaptic receptors are an important component of neural communication, and their function is critical for the proper functioning of the nervous system.
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In which reaction does the oxidation number of oxygen increase?
a. Ba(NO3)2(aq)+K2SO4(aq) → BaSO4(s)+2KNO3()aq
b. HCL(aq)+NaOH(aq) → NaCl(aq)+H2O(l)
c. MgO(s)+H2O(l) → Mg(OH)2(s)
d. 2SO2(g)+O2(g) →2SO3(g)
e. 2H2O(l) → 2H2(g)+O2(g)
2H2O(l) → 2H2(g)+O2(g) We must calculate the oxidation number of oxygen in each process in order to ascertain which one of the reactions results in an increase in oxygen's oxidation state. The correct option is E.
Why is it called oxidation?Antoine Lavoisier used the term "oxidation" to describe the interaction of a material with oxygen. The definition was eventually expanded to cover additional processes in which electrons are lost, regardless of whether oxygen was present, because it was understood that the material loses electrons when it is oxidised.
When does oxidation take place?No of the form of electrical cell, oxidation always occurs at the anode. Galvanic and electrolytic cells have reversible anode and cathode charges. The cathodes and anodes of electrolytic cells are designated negatively and positively, respectively.
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what are the units for the rate constant, k, for a second-order reaction?
a. k=Lmol−1s−1.
b. reciprocal seconds (s−¹)
c. M/s
d. mol dm−³ s−¹
the units for the rate constant, k, for a second-order reaction is:
k = L. mol⁻¹. s⁻¹
correct option: a
What is second-order reaction?A word used to describe the rate of a chemical reaction when the rate is proportional to the product of the concentrations (in moles) of two of the reactants, as well as the square of the molar concentration of such reactant if there is only one, is called as bi-molecular kinetics. Second-order reaction rates are inversely correlated with the square of a reactant's concentration or the product of the concentrations of two reactants.
Nitrogen dioxide creates nitrogen monoxide and oxygen as an example of a second-order process.
Correct option: a
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Explain how a carbon-zinc dry cell produces a voltage difference between the positive and negative terminals.
The development of positive charge on carbon rod and negative charge on zinc causes development of voltage difference.
The voltage difference in any electrochemical reaction arises due to difference in charges on each side, which is further ascertained by the presence of electrons. Here we see that carbon rod becomes positively charged on flow of electrons while zinc rod becomes negatively charged.
The dry cell here indicates lack of acid in the cell. However, the replaced liquid here is moist electrolyte. Now the deposition of charged on each side on further connection with leads from outer side results in flow of electron and hence current is generated.
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Which of these molecules would be soluble in water?
It is challenging to determine which molecules might be soluble in water without knowing the precise compounds in question. To forecast solubility, there are some generic rules that can be employed.
A substance's capacity to dissolve in a specific solvent, such as water, is referred to as being soluble in chemistry. A chemical that is soluble in a specific solvent can combine uniformly with the solvent to create a clear, transparent solution. The polarity of the solvent and the material, temperature, and pressure are only a few examples of the variables that might affect how soluble something is. Chemistry places a lot of emphasis on the notion of solubility because it affects numerous chemical processes and reactions as well as many substances' features and behaviour.
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Convert 6.94 mol Na2SO4 to mass of NaOH. Please round two digits after the decimal point. Pls don't forget the substances and units.
Balanced equation:
CaSO4+2NaOH--> Na2SO4+ Ca(OH)2
Thank you in advance!!
Answer:
The given balanced equation is not relevant to the conversion of 6.94 mol Na2SO4 to the mass of NaOH. However, we can use stoichiometry to calculate the amount of NaOH required to react with 6.94 mol of Na2SO4.
From the balanced equation, we can see that 1 mole of Na2SO4 reacts with 2 moles of NaOH. Therefore, we can calculate the number of moles of NaOH required as follows:
Number of moles of NaOH = 6.94 mol Na2SO4 x (2 mol NaOH / 1 mol Na2SO4) = 13.88 mol NaOH
Now, we can use the molar mass of NaOH to calculate the mass of NaOH required:
Mass of NaOH = number of moles of NaOH x molar mass of NaOH
= 13.88 mol NaOH x 40.00 g/mol NaOH
= 555.20 g NaOH
Therefore, 6.94 mol of Na2SO4 requires 555.20 g of NaOH to react completely.
Note: It's important to specify the substances and units in the answer, as requested.
Marsupials are a group of mammals that give birth to very immature young and raise them in a pouch. Opossums, kangaroos, and Tasmanian devils are all marsupials. Marsupials are common in Australia and South America. Previously scientists thought marsupials originated in Australia, but new evidence confirmed that all marsupials evolved from a common ancestor in South America. What is the most likely explanation for why marsupials are related in Australia and South America? Group of answer choices A huge asteroid struck Earth and the impact broke the two continents apart. An ice age froze the ocean surface and marsupials migrated to Australia. The continents were once joined into a supercontinent that slowly broke apart. A series of earthquakes and volcanoes separated the two continents.
About 100 million years ago, in South America, marsupials first appeared. Australia, Antarctica, and South America were all connected at the time to form one large continent. Australia and Antarctica gradually separated from South America and developed into independent continents.
Why is marsupials more in Australia than South America ?
The diversity of marsupials is thought to be higher in Australia than in South America because there were no terrestrial placental mammals there in prehistoric Australia to compete with marsupials. The only other large mammal that uses hopping as its main mode of propulsion is the kangaroo.
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Which acid is commonly responsible for the dissolution of limestone? Carbonic Sulfuric Nitric Hydrochloric
Answer: A: Carbonic
Explanation: Quizlet confirmed
what atom is weakly electronegative and would be more stable if it gave up a valence electron?
Potassium atom is weakly electronegative and would be more stable if it gave up a valence electron.
The propensity of an element to draw a pair of bonding electrons is measured by its electronegativity. The Pauling measure is most frequently employed. The number ranges from 4.0 for fluorine, the most electronegative element, to 0.7 for cesium and francium, the least electronegative elements.
What happens if two elements with equivalent electronegativity combine?
Think about the connection between elements A and B. Since both atoms have the same propensity to attract the bonding pair of electrons if they are equally electronegative, it will typically be located halfway between the two atoms.
Normally, A and B would have to be the same atom to form a connection like this. This kind of bond can be found in compounds like H2 or Cl2, for instance. It's essential to keep in mind that this is a typical image. Actually, the electrons are in a molecule orbital, where they are constantly revolving. The electrons in this type of connection are distributed equally between the two atoms, making it a "pure" covalent bond.
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Describe the properties of solutions of gases in liquids Question The solubility of a gas in water will typically decrease most with Select the correct answer below: a) increasing polarity. b) decreasing polarity. c) decreasing temperature. d) increasing pressure.
With an increase in pressure, gases become more soluble in water. At a particular temperature, an increase in pressure causes a gas to become more soluble in a liquid.
The gas particles have more kinetic energy as the temperature rises, which causes them to travel more quickly and cause them to escape the liquid. As a result, solubility declines as temperature rises. The solubility will be larger the lower the temperature.
Temperature increases result in an increase in the number of gas molecules or atoms that are stimulated, which improves the solubility of solids in water but decreases the solubility of gases in water. The solubility of solids and liquids is basically unaffected by changes in pressure.
In contrast, a drop increase in pressure causes a gas to become less soluble, and a rise in temperature causes a gas to become less soluble in a liquid.
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the phenolate ion will appear this color under acidic conditions. What color is this?
The phenolate ion is a conjugate base of phenol and it appears colorless in its pure form. However, under acidic conditions, it can be protonated to form phenol, which is a colorless compound.
It is possible that the question is referring to the color of a compound that contains the phenolate ion and the changes color under acidic conditions. One example of such a compound is the phenolphthalein, which is a colorless in acidic solutions and appears pink in basic solutions.
In this case, the phenolate ion will not be visible under the acidic conditions as it will have been protonated.
The phenolate ion is an anion that is derived from phenol by the loss of a proton (H⁺). Phenol is an aromatic organic compound that has a hydroxyl (-OH) group attached to a benzene ring. In the presence of a base, such as sodium hydroxide (NaOH), phenol can lose a proton from the hydroxyl group, resulting in the formation of the phenolate ion.
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Transcribed image text: Select the solvents that are commonly used to prepare a sample for 'H NMR. deuterium oxide SOOS O ✓ acetone acetone-do chloroform-d dimethyl sulfoxide Incorrect
Deuterium oxide is a typical solvent used to prepare a sample for H1 NMR. result, choice A is accurate.
The nuclei respond by emitting an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus when they are perturbed by a mild oscillating magnetic field in a strong constant magnetic field. Nuclear magnetic resonance (NMR) is the term for this phenomena (NMR).
Because to its broad range of solvent constraints, simple spectra, and high boiling point, DMSO is the most popular organic solvent for NMR study.
When organic molecules and heavy water interact with one other in the presence of the right catalyst, deuterium solvents are produced.Occasionally, chloroform was used as a drug or in attempts. Chloroform might work by accelerating the passage of potassium ions through certain potassium channels located in nerve cells.
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Draw the structure of 3‑methylbenzoic acid in the space. Based on the given structure, predict the polarity of this compound? a. nonpolar b. polar
According to the structure of the3- methyl benzoic acid in space, it is polar in nature due the presence of carboxyl group and the slightly polar benzene ring. So option B is correct.
Here is the structure of the 3-methylbenzoic acid in space. For the proper structure, refer to the image attachment in this answer.
H
|
C
/ \
C O-H
/ \
C C
/ \
H CH3
In order to predict the polarity of any compound, it is essential to consider the electronegativity of the atoms involved in the formation of the molecule. In the case of 3-methylbenzoic acid, the oxygen atom in the carboxyl group (COOH) is highly electronegative, so it creates a polarity between the oxygen and carbon atoms. Also, the benzene ring has a slightly polar character due to the presence of double bonded carbon-carbon atoms. Therefore, the 3-methylbenzoic acid molecule is polar in nature due to the presence of the carboxyl group and also due to slightly polar benzene ring.
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aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and of hydrogen gas over water at and . how many grams of aluminum reacted? the partial pressure of water at is . round your answer to significant figures.
Answer:0.0324
g Al
Explanation:We're asked to find the number of grams of
Al
that reacted, given some
H
2
(
g
)
product characteristics.
Let's first write the chemical equation for this reaction:
2
Al
(
s
)
+
6
HCl
(
a
q
)
→
2
AlCl
3
(
a
q
)
+
3
H
2
(
g
)
The total pressure of the gaseous system is given as
751
mm Hg
, and the partial pressure of water vapor is
26.8
mm Hg
at
27
o
C
. The pressure of hydrogen gas is thus
P
total
=
P
H
2
O
+
P
H
2
P
H
2
=
751
mm Hg
−
26.8
mm Hg
=
724
mm Hg
This pressure in atmospheres is
724
mm Hg
(
1
l
atm
760
mm Hg
)
=
0.953
atm
We'll now use the ideal gas equation to find the number of moles of
H
2
formed:
(
T
=
27
o
C
+
273
=
300
K
)
n
=
P
V
R
T
=
(
0.953
atm
)
(
0.0465
L
)
(
0.082057
L
∙
atm
mol
∙
K
)
(
300
K
)
=
0.00180
mol H
2
(volume converted to liters here)
Using the coefficients of the chemical equation, we'll now find the relative number of moles of
Al
that react:
0.00180
mol H
2
(
2
l
mol Al
3
mol H
2
)
=
0.00120
mol Al
Lastly, we'll use the molar mass of aluminum (
26.98
g/mol
) to find the number of grams that reacted:
0.00120
mol Al
(
26.98
l
g Al
1
mol Al
)
=
0.0324
g Al
Thus,
0.0324
grams of aluminum
reacted.
when a utensil is stored in water between uses, what are the requirements? answer choices A. running water at any temperature, or a container of water at 70 degrees F or lower B. running water at any temperature, or a container of water at 135 degrees F of higherC. running water at 70 degrees F or lower, or a container of water at 70 degrees F or lower D. running water at 135 degrees F or higher, or a container of water at 135 degrees F or higher
When a utensil is stored in water between uses, the requirements are running water at 135 degrees F or higher, or a container of water at 135 degrees F or higher. So, correct answer is option (D).
A safe food that require controlled time and temperature is known as TCS food, include milk and dairy products, eggs, and meat (beef, pork, lamb). The
utensil should be placed over the rim of the container with the handle facing up. Plates without TCS can be placed on clean, sanitized surfaces that come in contact with food. Some spoons or ladles can be kept under running water. Periodically store used tools in a container of water maintained at 135 degree F (57°C) or higher and clean tools and containers at least every 24 hours or as often as necessary to prevent dirt build-up.
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what is the difference between bio1613 prin of nutrition verse fcs1253 prin of nutrition
Bio1613 Principles of Nutrition is an introductory course that explores the scientific basis for nutrition and its implications for health, illness, and well-being. The course focuses on the biochemical, physiological, and metabolic aspects of nutrition, including vitamins, minerals, fat, carbohydrate, and protein metabolism.
FCS1253 Principles of Nutrition is more focused on the practical application of nutrition. This course looks at the components of a well-balanced diet, as well as nutrition education and guidelines tailored to specific populations. The course also covers nutrition misconceptions, dietary recommendations, and the role of food in health promotion. Additionally, students will gain an understanding of current dietary trends, food labeling, and the potential consequences of improper nutrition.
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Can you choose whether or not each type of glassware can be heated test tubes?
Borosilicate glass test tubes typically work well for heating because they can endure high temperatures without cracking or breaking.
Some forms of glass, such soda-lime glass, may not be able to resist high temperatures and may shatter or break when heated, such as test tubes.
Before to heating glassware, it is crucial to always review the manufacturer's instructions for that particular type of glassware. Also, heated glassware should be handled carefully because it can get quite hot and result in burns or other injuries.
While handling hot glassware, always use the proper safety gear, such as heat-resistant gloves or tongs.
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Use the model for double replacement reactions to predict the products for the following reactants. Circle the ionic solution and underline the other compound.
Ca(OH2(aq) + 2HCl(aq) —->
The double replacement reaction generally results in the formation of precipitate. Here the products of the given reaction are CaCl₂ and H₂O and the ionic solution is CaCl₂.
What is double replacement reaction?The chemical reaction in which two chemical substances react by exchanging the ions to form two new molecules. In this reactions, positive ions exchange negative ions. A double displacement is also called the double decomposition reaction.
In general the reaction can be given as:
AB + CD → AD + CB
The reaction of Ca (OH)₂ with HCl is:
Ca (OH)₂ + 2HCl → CaCl₂ + 2 H₂O
Thus here the given reaction is double displacement, CaCl₂ is the ionic compound and other compound is water.
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what is perchloric acid formula?
The formula for perchloric acid is HClO₄.
Perchloric acid is a strong mineral acid that contains a central chlorine atom bonded to four oxygen atoms and a hydrogen atom. It is a colorless and odorless liquid that is highly corrosive and reactive, making it a potent oxidizer.
Perchloric acid is commonly used in laboratory and industrial settings for its strong oxidizing properties and ability to dissolve a variety of metals and organic compounds. It must be handled with care due to its potential to form explosive salts with organic materials and other reducing agents.
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Which proportionality applies to Avogadro's law?
O V 1/P
O V T
O P T
O V n
V n is the proportionality that applies to Avogadro's law. Therefore, the correct option is option D.
What is Avogadro's law?According to Avogadro's law, equal volumes of various gases each contain an equal amount of molecules at the same temperature and pressure. On the presumption of an ideal (perfect) gas, this experimental relation can be deduced first from kinetic theory of gases. For actual gases, the law is roughly applicable when temperatures and pressures are both low enough.
Avogadro's number, or even the Avogadro constant, is the precise quantity of molecules inside one gram-mole of such a material, defined as that of the molecular weight metric grams, which is equal to 6.022×10²³.
Avogadro’s law
V1/n1=V2/n2 or Vn=k.
Therefore, the correct option is option D.
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What is likely to be true about the ∆H for this reaction?
C2H6 (l) → C2H6 (s)
A. ∆H>0
B. ∆H<0
C. ∆H=0
Answer:
B. ∆H<0
Explanation:
The change in enthalpy (∆H) for a reaction is a measure of the amount of heat that is absorbed or released during the reaction. A positive ∆H indicates that the reaction is endothermic, meaning that heat is absorbed during the reaction. A negative ∆H indicates that the reaction is exothermic, meaning that heat is released during the reaction. A ∆H of zero indicates that the reaction is thermally neutral, meaning that there is no heat transfer during the reaction.
In the given reaction, C2H6 (l) → C2H6 (s), the substance changes from a liquid to a solid, which typically involves a decrease in entropy (or disorder) of the system. This means that the reaction is exothermic, because the decrease in entropy is usually accompanied by a release of heat. Therefore, we would expect the ∆H for this reaction to be negative, which means that B. ∆H<0 is likely to be true for this reaction.
what will be the result if heat is added to an endothermic reaction?
The result if heat is added to an endothermic reaction is that it will increasing the amounts of the products and will decreasing the amounts of the reactants.
If the reaction is the endothermic reaction and if we add the heat to the endothermic reaction then it will increase in the temperature and it will cause the forward reaction to occur, and increasing the amounts of the products and will decreasing the amounts of the reactants. The Lowering of the temperature will be produce the opposite of the response.
Thus, the increase in the amount of the product occurs if we add the heat to the endothermic reaction.
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How many moles of NaN3 are needed to make 6.25 moles of N2?
Answer:
4.17
Explanation:
The balanced chemical equation for the reaction of NaN3 to form N2 is:
2 NaN3 -> 3 N2 + 2 Na
This equation shows that 2 moles of NaN3 produce 3 moles of N2. We can set up a proportion to find out how many moles of NaN3 are needed to make 6.25 moles of N2:
2 moles of NaN3 : 3 moles of N2 = x moles of NaN3 : 6.25 moles of N2
To solve for x, we can cross-multiply and simplify:
2 × 6.25 moles of NaN3 = 3 × x
12.5 moles of NaN3 = 3x
x = 12.5 / 3 = 4.17 moles of NaN3
Therefore, 4.17 moles of NaN3 are needed to make 6.25 moles of N2.
rank the following compounds in order of increasing strength of intermolecular forces, putting the molecule with the weakest intermolecular force first.
The order of increasing strength of intermolecular forces can be determined by considering the molecular structure, molecular weight, and polarity of the compounds. The compounds are:
Methane (CH4)Ethanol (C2H5OH)Propanone (CH3COCH3)Ethanoic acid (CH3COOH)What do mean by intermolecular forces?
Intermolecular forces are the attractive or repulsive forces that exist between molecules in a substance. These forces arise due to the interaction of the electric charges present on the molecules. Intermolecular forces are responsible for many of the physical properties of a substance, such as boiling point, melting point, viscosity, and surface tension.
The ranking of the compounds based on the strength of their intermolecular forces, from weakest to strongest, is as follows:
Methane (CH4)Methane is a nonpolar molecule, and its only intermolecular force is London dispersion forces, which are relatively weak compared to the other intermolecular forces.
Ethanol (C2H5OH)Ethanol is a polar molecule that has hydrogen bonding, dipole-dipole interactions, and London dispersion forces. However, its intermolecular forces are weaker than those of propanone and ethanoic acid due to its smaller size.
Propanone (CH3COCH3)Propanone is a polar molecule that has dipole-dipole interactions and London dispersion forces. It is larger than ethanol, so its intermolecular forces are stronger than ethanol's.
Ethanoic acid (CH3COOH)Ethanoic acid is a polar molecule that has hydrogen bonding, dipole-dipole interactions, and London dispersion forces. The presence of hydrogen bonding in ethanoic acid gives it the strongest intermolecular forces out of the four compounds.
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place these hydrocarbons in order of decreasing boiling point (from highest to lowest boiling point).a) paraffinb) propanec) pentaned) 2, 2-dimethylpropanee) nonadecane
The order of decreasing boiling point is: Nonadecane > Paraffin > Pentane > 2,2-dimethylpropane > Propane.
The boiling point of hydrocarbons depends on their molecular size and shape, as well as intermolecular forces, such as Van der Waals forces. Larger molecules and molecules with more branching tend to have weaker intermolecular forces, resulting in lower boiling points.
So, the order of decreasing boiling point of the given hydrocarbons is:
Nonadecane: This is the largest molecule among the given hydrocarbons, and it has the strongest intermolecular forces due to its size. It has the highest boiling point among the given options.
Paraffin: Paraffin is a general term for straight-chain alkanes, such as methane, ethane, propane, and butane. Among these, propane has the lowest molecular weight and boiling point, while butane has a higher boiling point due to its larger size. However, the exact boiling point of paraffin depends on the specific molecule, so we cannot say for sure where it falls in this list.
Pentane: Pentane is a branched-chain alkane, which means it has weaker intermolecular forces than a straight-chain alkane of the same size. However, it still has a higher boiling point than propane due to its larger size.
2,2-dimethylpropane: This molecule is highly branched, which means it has very weak intermolecular forces. It has the lowest boiling point among the given options.
So, the order of decreasing boiling point is: Nonadecane > Paraffin > Pentane > 2,2-dimethylpropane > Propane.
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When 19.04 grams of methane (CH4) are burned (see equation below), how many moles of oxygen gas (O₂) will be used? Please round your answer to two digits after the decimal point and don't forget units and substance!
CH4 + 2 O2 --> CO2 + 2 H₂O
Answer:
The number of moles of oxygen gas used when 19.04 grams of methane is burned is 2.38 mol O2.
Explanation:
To answer this question, we need to use the balanced chemical equation provided and the given mass of methane to determine the number of moles of oxygen gas used.
First, we need to calculate the number of moles of methane present in 19.04 grams of CH4:
Number of moles of CH4 = mass of CH4 / molar mass of CH4
= 19.04 g / 16.04 g/mol
= 1.19 mol
Next, we can use the stoichiometric coefficients from the balanced equation to determine the number of moles of oxygen gas required to react with the 1.19 mol of CH4:
1 mol CH4 + 2 mol O2 → 1 mol CO2 + 2 mol H2O
From this, we can see that 1 mole of CH4 reacts with 2 moles of O2. Therefore, we can calculate the number of moles of O2 required as follows:
Number of moles of O2 = 1.19 mol CH4 x (2 mol O2 / 1 mol CH4) = 2.38 mol O2
Therefore, 19.04 grams of methane will react with 2.38 moles of oxygen gas.
Note: It's important to specify the substance and units in the answer, as requested.
ethylene glycol is a liquid at room temperature and is soluble in water in all proportions. however, butane is a compound of similar molecular weight, but it is a gas at room temp and is insolube in water. how do you account for these diffeernces
ethylene glycol(CH2OH-CH2OH) is a liquid at room temperature and is soluble in water in all proportions; it is the liquid used in car radiators as antifreeze.
What is the main effect of ethylene?Ethylene effects include: fruit ripening, induction of flowering, loss of chlorophyll, abortion of plant parts, stem shortening, abscission (dropping) of plant parts, epinasty (stems bend), and dormancy. It can be produced when plants are injured, either mechanically or by disease.
Where is ethylene produced?Ethylene has historically been made from petroleum, but the production has been transitioning to using natural gas. The principal method of producing ethylene is steam cracking, a process which breaks down hydrocarbons through the refining of petroleum or natural gas.
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the ionic form of which metal atom is not likely to be found in the pocket of a catalytically active dna polymerase?
The ionic form of the metal atom that is not likely to be found in the pocket of the catalytically active DNA polymerase is sodium that is Na.
The sodium that is Na does not readily to form the divalent cation, and is essential for the DNA polymerase catalytic. The sodium is the metal and has ability to donate the electron and form the cation. The net charge on the sodium cation is +1. The valence electron of the sodium atoms is one. The net charge on the sodium atom in the mono positive ion is equal to the valence electrons and sodium does not not readily forms the divalent ion.
Thus, the sodium metal atom is not likely to be found in the pocket of the catalytically active of the DNA polymerase.
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