Question

1) A certain substance has a heat of vaporization of 36.02 kJ/mol.36.02 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.503.50 times higher than it was at 347 K?

2) A total of 767 cal767 cal of heat is added to 5.00 g5.00 g of ice at −20.0 °C.−20.0 °C.

What is the final temperature of the water?

Specific heat of H2O(s)H2O(s)	2.087 J/(g⋅°C)2.087 J/(g⋅°C)
Specific heat of H2O(l)H2O(l)	4.184 J/(g⋅°C)4.184 J/(g⋅°C)
Heat of fusion for H2OH2O	333.6 J/g333.6 J/g

Answer 1