Question

What is the mass of 1 molecule of CH4?

Answer 1

`M_(r,CH_4)=16.04295` u `=2.663994` g

Explanation:

`A_(r,C)=12.01115` u
`A_(r,H)=1.00795` u

`M_(r,CH_4)=1*A_(r,C)+4*A_(r,H)`
`M_(r,CH_4)=1*12.01115+4*1.00795=16.04295` u

In grams this would be:

`m_(CH_4)=16.04295` u `*1.660538921*10^(-24)` g/u `~~2.663994` g