Question

3 C10H22O (l) + 45 O2(g) → 30 CO2 (g) + 33 H2O (l) The number of molecules of oxygen in the reactants is

Answer 1

Step-by-step explanation:

To determine the number of molecules of oxygen in the reactants, we need to look at the coefficient of O2 in the balanced chemical equation.

In this case, the coefficient is 45, which means that for every one molecule of O2, we need 45 molecules of O2 to react with the 3 molecules of C10H22O. Therefore, the total number of molecules of O2 in the reactants is:

45 molecules O2/mol x 3 mol C10H22O = 135 molecules of O2

So, there are 135 molecules of O2 in the reactants.