Question

How do you change 5.20 molecules of `C_3H_6O_2` to grams?

Answer 1

`6.40xx10^-22 g`

Explanation:

The molecular mass of `C_3H_6O_2` is

`3xx12.011+6xx1.008+2xx16.000=71.081 g mol^-1`

So 5.20 molecules will have the mass of

`5.20xx71.081 g mol^-1 div 6.022xx10^23 mol^-1`

which gives `6.40xx10^-22 g`