The number of molecules of sulphur (${\mathrm{S}}_8$ ) present in $16$ g of solid sulphur is:

$\left[\mathrm{S}=32\right]$

The percentage of hydrogen in $({\mathrm{NH}}_4{)}_2{\mathrm{SO}}_4$ is:

$\left[\mathrm{N}=14; \mathrm{H}=1; \mathrm{S}=32; \mathrm{O}=16\right]$

The moles in $28.4$ g of chlorine ($\mathrm{Cl}$) are:      

 $\left[\mathrm{Cl}=35.5\right]$

Raunak took $5$ moles of carbon atoms in a container and Krish also took $5$ moles of sodium atoms in another container of same weight, 
(a) Whose container is heavier? 
(b) Whose container has more number of atoms?

$\left[\mathrm{Atomic} \mathrm{weight} \mathrm{of} \mathrm{Na}=23; \mathrm{C}=12\right]$

Which has more number of atoms?
$100$ g of ${\mathrm{N}}_2$ or $100$ g of ${\mathrm{NH}}_3.$          

$\left[\mathrm{Atomic} \mathrm{weight} \mathrm{of} \mathrm{N}=14; \mathrm{H}=1\right]$

Compute the number of ions present in $5.85$ g of sodium chloride.

$\left[\mathrm{Atomic} \mathrm{weight} \mathrm{of} \mathrm{Na}=23, \mathrm{Cl}=35.5\right]$