Question

0 g of magnesium is burnt with 0.56 g o2 in a closed vessel. Which reactant is left in excess and how much? (at. Wt. Mg = 24; o = 16) choose answer: mg, 0.16 g o2, 0.16 g mg, 0.44 g o2, 0.28 g

Answer 1

0 g of magnesium is burnt with 0.56 g o2 in a closed vessel. Which reactant is left in excess and how much? (at. Wt. Mg = 24; o = 16) choose answer: mg, 0.16 g o2, 0.16 g mg, 0.44 g o2, 0.28 g

Answer 2

Explanation:

But in this chemical reaction, oxygen is the limiting reagent, i.e. the reaction goes on until oxygen is available. The reaction only ends after all the oxygen available is over. Thus, when 1.0 g of magnesium is burnt with 0.56 g ${{\text{O}}_2}$ in a closed vessel, 0.16 g magnesium is left in excess.