How will the amount of thermal energy required to change each substance from a liquid to a gas differ?

a) water and mercury will require the same amount of energy to change from liquid to gas.
b) mercury will require a greater amount of energy to change from liquid to gas than water.
c) neither water nor mercury will require any energy to change from liquid to gas as long as they are each at their boiling temperatures.
d) water will require a greater amount of energy to change from liquid to gas than mercury.

Use henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.7 l of water upon warming from 25 ˚c to 50 ˚c. assume that the water is initially saturated with nitrogen and oxygen gas at 25 ˚c and a total pressure of 1.0 atm. assume that the gas bubbles out at a temperature of 50 ˚c. the solubility of oxygen gas at 50 ˚c is 27.8 mg/l at an oxygen pressure of 1.00 atm. the solubility of nitrogen gas at 50 ˚c is 14.6 mg/l at a nitrogen pressure of 1.00 atm. assume that the air above the water contains an oxygen partial pressure of 0.21 atm and a nitrogen partial pressure of 0.78 atm.