How many grams of water would require 2200 joules of heat to raise its temperature from 34*C to 100*C? The specific heat of water is 4.184 J/g*C
Energy change = mass*specific heat*temperature rise
2200 = mass*4.184*(100 - 34)
mass = 2200/(4.184*66) grams ≈ 7.97 grams
