Number of nitrogen atoms present in 1.4 g of N₂:

Q. $4.4$ gm of $C{O}_2$ and $2.24$ litres of $H_2$ at STP (1 atm, 273 K)are mixed in a container. The total number of molecules present in the container will be:

Q. Calculate the number of sodium atoms present in $5.3\text{g}$ of $N{a}_{2}C{O}_3$.

Q. Calculate the number of oxalic acid molecules in $100mL$ of $0.02N$ oxalic acid.

Q. The number of atoms present in 4.25 grams of NH3 is approximately: