posted by chadala sharon .
10g of hydrogen is burnt in the presence of excess oxygen.the mass of water formed is?
2H2 + O2 = 2H2O
10g of H2 is 5 moles.
Each mole of H2 produces a mole of H2O,
so, you will get 5 moles of water.
Just convert that to grams for the mass.
10G of hydrogen burnt in the presence of excess of oxygen, the mass of water is formed?