What is the number of moles of $N$ atoms and number of moles of $O$ atoms respectively present in one mole of uracil?

If $24 \times 10^{23}$ molecules are removed from $50 \ g$ of hydrogen gas $(H_2)$,how many moles of hydrogen remain?

Find the total number of electrons,protons,and neutrons in $0.192 \ g$ of $_{16}^{32}S$.

The mass of hydrogen (in grams) present in $1.0 \text{ L}$ of pure water of density $1.0 \text{ g cm}^{-3}$ is

The ratio of the number of oxygen atoms $(O)$ in $16.0 \ g$ ozone $(O_3)$,$28.0 \ g$ carbon monoxide $(CO)$,and $16.0 \ g$ oxygen $(O_2)$ is (Atomic mass: $C = 12$,$O = 16$ and Avogadro's constant $N_A = 6.0 \times 10^{23} \ mol^{-1}$)

The mass of $112 \ cm^3$ of $CH_4$ gas at $STP$ is ............. $g$.