2.3g hydrogen react with 29g of oxygen to form water what is the limiting reagent

Answer 1

2H2 + O2 ==> 2H2O

mols H2 = 2.3/2 = 1.15
mols O2 = 29/32 = 0.906
Convert mols each to mols product.
1.15 x (2 mols H2O/2 mols H2) = 1.15
0.906 x (2 mols H2O/1 mol O2) = ?
The smaller amount of product is the product formed and the reagent responsible for that amount is the limiting reagent.