Determine the enthalpy of vaporization, in kJ/mol, of C₆H₁₄ if 14.5 kJ of heat is needed to vaporize 0.500 moles of C₆H₁₄.

Determine the enthalpy of vaporization, in kJ/mol, of C₆H₁₄ if 14.5 kJ of heat is needed to vaporize 0.500 moles of C₆H₁₄.

What amount of heat, in kJ, is required to vaporize 115.00 g of ethanol (C₂H₅OH)? (∆Hvap = 43.3 kJ/mol)

What amount of heat, in kJ, would be involved in condensing 15.8 g of CH₃OH? (∆Hvap = 38.0 kJ/mol)

A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and temperature held constant, what will be the volume of the balloon if 0.30 moles of gas are added?

A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has what volume at -14.3 °C assuming pressure is held constant?