Question

the combustion of 14 grams of co according to the reaction co(g) ½o2(g) co2(g) 67.6 kcal gives off how much heat?

Answer 1

As per tthe equation, which is balanced, 1 mol of CO gives off 67.6 kcal.

Calculate the number of mols that corresponds to 14 grams of CO.

Molar mass of CO = 12 + 16 = 28 g/mol

Then number of mols = mass / molar mass = 14 g / 28 g/mol = 0.5 mol.

Heat released = 0.5 mol * 67.6 cal/mol = 33.8 kcal.

Answer 2

The answer is 34 kcal.