Question

How many grams are there in the following?
i) $1mole$ of chlorine molecule, $C{l}_2$
ii) $2moles$ of sulphur molecules, $S_8$
iii) $4moles$ of ozone molecules, $O_3$
iv) $2moles$ of nitrogen molecules, $N_2$

Answer 1

(i) Atomic mass of $Cl=35.5g$

$\therefore$ Mass of $Cl$ present= $1\times (2\times 35.5)=71g$

(ii) Atomic mass of $S=32g$

$\therefore$ Mass of $S$ present= $2\times (8\times 32)=512g$

(iii) Atomic mass of $O=16g$

$\therefore$ Mass of $O$ present= $4\times (3\times 16)=192g$

(iv) Atomic mass of $N=14g$

$\therefore$ Mass of $N$ present= $2\times (2\times 14)=56g$