Chemistry HELP!!?

Question

1. Adding a solid solute to a solvent: a) raises the vapor pressure of the solvent. b) lowers the vapor pressure of the solvent. c) does not affect the vapor pressure solvent. d) has an unpredictable effect on the vapor pressure of the solvent.

2. Which of the following will affect both the rate of dissolving and the solubility of a soild in a liquid?

a) heating b) crushing c) stirring d) increasing pressure

3. which one these statements about dissolving gases in liquid solvents correct? a) decreasing the pressure over the solvent increases the solubility of gases. b) increasing the temperature makes gases more solube. c) increasing the pressure over the solvent increases the solubility of gases.

4. when 50g of ethyl alcohol is added to 40g of water a solution is formed. What is correct?

a) ethyl alcohol and water are miscible liquids b) water is the solvent in this solution c) ethyl alcohol is a polar molecule d) water is the solute in this solution.

Answer 1

1)answer b correct

2) answer a correct

3) answer c correct

4) only b is incorrect

Answer 2

1) a

2) a

3) c

4) only b is incorrect