Question

How many molecules present in 32 gram of methane

Answer 1

the molecular weight of CH4 is 16

16 g CH4 contains 6.022E23 molecules.

then 32 g CH4 contains

$\frac{32 \times 6.022 \times {10}^{23} }{16}$

$= 12.044 \times {10}^{23}$

molecules