If the heat from burning 6.800 g of C_6 H_6
2C_6 H_y (l)+15O_2 (g)?12CO_2 (g)+6H_2 O(l)+6542 kJ
is added to 5691 g of water at 21 °C, what is the final temperature of the water?© BrainMass Inc. brainmass.com March 5, 2021, 12:21 am ad1c9bdddf
Let's take a look at what we need to accomplish. We're given the equation for the combustion, and the amount of energy released given the reactants in that equation. We're also given the mass of one of the reactants, and assuming that the other, oxygen, is abundant, we'll say that the reactant with mass given is the limiting reagent.
Mass = number of moles x molecular weight
Molecular weight of C6H6 = molecular weight of carbon x ...
The expert examines combustion and final temperatures.