(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Question 1: Hot water at 100 degrees is added to 5 g of ice at 0 degrees. What is the minimum mass of hot water needed to melt all the ice? (Specific latent heat of fusion of ice = 336Jg^{-1}, specific heat capacity of water is 4.2Jg^{-1}K^{-1})

2. The attempt at a solution

Question 1:

mc[tex]\Delta[/tex][tex]\theta[/tex] = m(latent fusion)

m[tex]\Delta\theta[/tex] = 400

And then I have a doubt: How can the hot water's temperature decrease from 100 degrees to 0 degrees? ([tex]\Delta\theta[/tex] = 100 - 0)

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: When heat becomes confusing

**Physics Forums | Science Articles, Homework Help, Discussion**