Period Remember It takes 334 Joules to melt one gram of ice

Last updated: 4/29/2023

Period Remember It takes 334 Joules to melt one gram of ice at 0 C It takes 334 Joules to change one gram of water at 0 C to one gram of ice It takes 2260 Joules to change one gram of water at 100 C to one from of steam It takes 2260 Joules to change one gram of steam to one gram of water at 100 C Cp Ice 2 06 J g C Cp vapor 2 02 J g C Cp water 4 18 J g C One step problems 1 How many Joules of heat are needed to change 50grams of water at 100 C to steam 2 How many Joules of heat are needed to melt 25 grams of ice 3 How many Joules of heat are needed to change the temperature of 25 grams of water from 25 C to 70 C 4 How many Joules of heat must be removed from 50 grams of water at 0 C to change it to ice 5 How many Joules of heat must be removed from 75 grams of steam at 100 C to change it to hot water at 100 C Two step problems 1 How many Joules of heat are needed to melt 30 grams of ice and then heat the water to 60 C 2 How many Joules of heat are needed to change 40 grams of water at 73 C to steam at 100 C 3 How many Joules of heat must be removed from 68 grams of water at 45 C to change the water to ice 4 How many Joules of heat must be removed from 95 grams of steam at 100 C to cool it to water at 20 C 5 How many Joules are needed to change 38 grams of water at 0 C to steam at 100 C