# Latent heat

1. Feb 7, 2006

### gomani

how do you slove latent heat problems?

also is there a easier way to slove thermodyamics problem?

explain in a way a way that a 9th grader like me can understand.

thanks

2. Feb 7, 2006

### Pengwuino

What kind of problems?

3. Feb 7, 2006

### gomani

i need to know the Phase change of objects and how to caculate the Joules of energy needed for the changes.

4. Feb 7, 2006

### Staff: Mentor

Generally, at that level, such problems ask for final temperature and you get the latent heat from a table. But perhaps you could be more specific....?

5. Feb 8, 2006

### R34p3r

yeah

first off
"also is there a easier way to slove thermodyamics problem?"
simply put.....no

you solve them by using the equation

Q=cm(delta)T

6. Feb 8, 2006

### gomani

i would like to know more about the heat exchange in mixtures and
example would be like:

How much heat energy is required to change?
a) 2.0kg of ice at 0 C to water at 0 C?

b) 500g of water at 100 C to steam at 100 C?