Question

The number of molecules in 22.4 cubic cm of dinitrogen gas at STP is

Answer 1

There are 6.022*10^23 molecules present in 22400cm^3 gas.
Therefore the no. of molecules present in 22.4cm^3=

6.022*10^23 * 22.4cm^3 divide by:
224000 cm^3

Hence we get the ans as 6.022*10^20 molecules.