One litre of O2 and one litre of H2 are taken in a vessel of 2 litre capacity at NTP. The gases are made to combine to form water. Calculate:
a. the mole and mass of water formed.
(b) the amount of gas left in vessel.
(c) the total pressure if the vessel is heated to 100∘C .
(d) mole of O2 used for formation of water.