Question

x' moles of n2 gas at stp conditions occupy a volume of 10 litre then the volume of 2x

Answer 1

One mole of any gas at STP would have a volume of 22.4 litres. Sulphur dioxide, SO2, is a gas at STP. So, the volume of 2 moles of SO2 at STP = 22.4 x 2 = 44. 8 litres.