Question

If 21.8 g of NO and 13.8 g of O2 are used to form NO2, how many
moles of excess reactant will be left over?
2 NO (9) + O2(g) → 2 NO2 (g)

Answer 1

Answer:

Explanation:

1 . Write the chemical equation.

2 . Calculate the moles of product from the first reactant.

3 . Calculate the moles of product from the second reactant.

4 . Identify the limiting reactant and the excess reactant.

5 . Calculate the mass of excess reactant used up.

6 . Calculate the mass of unused excess reactant.

7 . Calculate the mass of limiting reactant needed to react with the 8 .  unused excess reactant.