Problem- 1) Calculate the heat required to sublime of 940 g of solid CO2 at the normal sublimation temperature. Delta H = 24.2 kJ/mole
2) A 1.00 kg object is lifted from the ground to a height of 15 meters. It is then dropped from that height and falls back to the ground. What is the velocity of the object immediately before it reaches the ground?
It is not a question in the book, so I just need the full solution of deriving!