The number of gram-molecules of $SO_2Cl_2$ in $13.5 \ g$ of sulfuryl chloride is .............

If a gaseous mixture contains $20\%$ $H_2$ by weight,what is the number of moles of $H_2$ in $100 \ g$ of the mixture (in $mol$)?

One mole of carbon atom weighs $12 \; g$. The number of atoms in it is equal to: (Mass of one carbon-$12$ atom is $1.9926 \times 10^{-23} \; g$)

The number of $N$ atoms in $681 \ g$ of $C_{7}H_{5}N_{3}O_{6}$ is $x \times 10^{21}$. The value of $x$ is $.....$ $(N_{A} = 6.02 \times 10^{23} \ mol^{-1})$ (Nearest Integer)

In a flask, the weight ratio of $CH_{4(g)}$ and $SO_{2(g)}$ at $298 \ K$ and $1 \ bar$ is $1:2$. The ratio of the number of molecules of $SO_{2(g)}$ and $CH_{4(g)}$ is

Which of the following statements is incorrect?