How many calories of heat are necessary to raise the temperature of 200g of ice at -30 degrees celsius to steam at 130 degrees? Show graph and work.

Answer 1

Divide this up into heat regions:
heating the ice from -30 to 0
melting the ice at 0
heating the water from 0 to 100
vaporizing the water at 100
heating the steam from 100 to 130

Add the heats to get total heat.

Calories? I thought calories went out 50 years ago. Joules is pretty standard unit of heat now.

Answer 2

what do you mean by add all the heats. Like add all the numbers you just gave me or what. I don't get it?

Answer 3

calculate the heat to accomplish each of the items listed, then add them up.