# Homework Help: Evaporation of water

1. Apr 23, 2014

### Bgerst103

1. The problem statement, all variables and given/known data

Water's heat of vaporization is 2260 kJ/kg. How much power would you need to apply to water so that the evaporation rate was .25 g/s?

2. Relevant equations

Not sure

3. The attempt at a solution

What equation can be used to find the given rate?

2. Apr 23, 2014

You can use $E=mL_v$ and $P= \frac{E}{t}$

3. Apr 23, 2014

### Bgerst103

E=(.00025)(2260) -> E=.565 -> .565/1=.565. Hows that look to you?

4. Apr 23, 2014