Physics Latent heat problem[HELP]?
Alright so I've missed the lesson since I was at the hospital and when I get back from break I must write the energy test. *sigh* Anyways...
Calculate the heat required if you want to first melt then bring to a boil and completely vapourize an ice cube. Assume the ice cube had an initial temp of 0 degrees.
Thank you so much for helping !
- az_lenderLv 77 years agoFavorite Answer
Need to know mass of the ice cube.
I'm going to assume its size is 2 cm x 2 cm x 2 cm,
which would make its volume 8 cm^3, and its mass 8 grams.
Latent heat of fusion = 80 cal/gram
Specific heat of liquid water = 1 cal/(gram degree)
Latent heat of vaporization = 540 cal/gram
Total heat = 8 grams (80 cal/g + 1 cal(g C)*100 deg C + 540 cal/g)
= 8 cal (80 + 100 + 540) = 5760 calories
Convert to joules if you wish.