1. The problem statement, all variables and given/know 2300 grams of water is heated. If this water starts at a temperature of 17 degrees Celsius, what amount of heat is needed to boil away all of this water? Note that the specific heat of water is 1 calorie per gram per degree Celsius, the Heat of vaporization of water is 540 calories per gram, and water boils at 100 degrees Celsius. 3. The attempt at a solution I figured that this would be the best formule for me to use Q = c m ΔT, and Qv = m Lv . Since water boils at 100 degrees celsius, I assumed that I should subtract 100-17 to get 83 degrees as the differnce in temperature. Can I please get assistance with understanding this probelm.