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Kay [80]
3 years ago
12

The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, w

hich of the following is the most logical chemical explanation for this phenomenon? Group of answer choices Ionic bonds form between alcohol molecules. These are the weakest type of bond and are easier to break than the hydrogen bonds between water molecules. Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air. Alcohol has a higher surface tension than water. This means that alcohol molecules can easily break away from other alcohol molecules and evaporate at a lower temperature. Alcohol molecules are more cohesive than water molecules. This means that as alcohol molecules evaporate, they pull other alcohol molecules into the air along with them.
Chemistry
1 answer:
Valentin [98]3 years ago
8 0

Answer:

Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air.

Explanation:

Hydrogen bonding is a kind of intermolecular interaction that occurs when hydrogen is bonded to a highly electronegative atom.

Both water and alcohols exhibit hydrogen bonding. However, alcohols exhibit fewer hydrogen bonds than water.

As a result of this, the temperature of evaporation is much higher for water than for alcohol because hydrogen bonds hold water molecules more closely than alcohol molecules are held.

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Answer:

D.

Explanation:

D is the correct answer because, in aqueous solution, solvent is water and solute (in this example carbon dioxide CO₂) is a substance dissolved in water. The amount of solute that can be dissolved in a solvent depends of chemical composition, temperature and pressure

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What properties characterize ionic compounds
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Which of the following elements exists as a diatomic molecule? Argon, Hydrogen, Boron, Sulfur
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5 0
3 years ago
a 200 mL aqueous solution of ammonia has a concentration of 1.50 M. What mass of ammonia is dissolved in the solution?
sukhopar [10]

Answer: 51 grams

Explanation:

Ammonia is a gas with a chemical formula of NH3.

Given that,

Amount of moles of NH3 (n) = ?

Volume of NH3 (v) = 200mL

since the standard unit of volume is liters, convert 200mL to liters

(If 1000mL = 1L

200mL = 200/1000 = 0.2L)

Concentration of NH3 (c) = 1.5M

Since concentration (c) is obtained by dividing the amount of solute dissolved by the volume of solvent, hence

c = n / v

Make n the subject formula

n = c x v

n = 1.50M x 0.2L

n = 3 moles

Now, calculate the mass of ammonia

Amount of moles of NH3 (n) = 3

Mass of NH3 in grams = ?

For molar mass of NH3, use the atomic masses:

N = 14g; H = 1g

NH3 = 14g + (1g x 3)

= 14g + 3g

= 17g/mol

Since, n = mass in grams / molar mass

3 moles = m / 17g/mol

m = 3 moles x 17g/mol

m = 51 grams

Thus, 51 grams of ammonia was dissolved in the solution.

5 0
3 years ago
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