I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!!
The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at 100oC to cause all of the water to vaporize?
To find the amount of heat required to vaporize the water, you'll need to use the formula:
Q = m * L
Where:
Q is the amount of heat (in calories)
m is the mass of the water (in grams)
L is the latent heat of vaporization (in cal/g)
In this case, you are given:
m = 10.0 g
L = 540 cal/g
Simply substitute the given values into the formula:
Q = 10.0 g * 540 cal/g
Now, multiply the mass and latent heat of vaporization:
Q = 5400 cal
Therefore, to cause all of the water to vaporize, you would need to add 5400 calories of heat to 10.0 grams of water at 100°C.