Question

2 NO(g) + O2(g) → 2 NO2(g)

How many grams of NO2 can be produced when 25.0 g of nitrogen oxide reacts?

Answer 1

2No+O2 gives 2No2

2 moles of No gives 2 moles NO2

Moles of No= 1.20/30=0.04

Moles = 0.04 ✖ 46=1.8 moles

Answer 2

25g/30.01g = 0.83 moles

0.83(2/2) = 0.83 moles

0.83*46.005 = 38.2 grams