Question

a 0.0500 mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 x 10^2g H2O. If the formula weight of this nutrient substance is 114g/mol, what is the fuel value (in nutrient Cal) if the temperature of the water increased 5.70C

Answer 1

mols sample = 0.05/114 = approx (but you do it for the real number) = 0.00044
q = mass H2O x specific heat H2O x delta T.
q = 200g x 1 cal/g*C x 5.7
q = approx 1100 calories for 0.05g or
1100/0.05 = approx 23000 calories
23,000 calories x (1 kcal/1000 cal) = 23 kcal = 23 nutrient calories.