How many molecules of hydrogen are present in 112 mL of a gas at NTP?
How many moles of helium gas occupy 22.4 litres at 0°C and 1 atmosphere?
One mole of helium at 0°C and 1 atmosphere occupies 22·4 litres.
How many number of moles of oxygen atoms are present in 0.6 mole of hydrated oxalic acid (COOH)22H2O?