formula

[Roxy]

What formula do I use the find :
1. How much energy is absorbed by water?

2. amount of heat produced per gram of fuel burned?

[chem_tr]

If it is regarding the fuel burning, you'll just use \Delta H; this value will give you how many calories are released as thermal energy; you'll divide this to the mole amount of compound to find the molar enthalpy. Then find the heat absorbance capacity of water by using a phase diagram.