Question

What is the mass of 1.5 moles of `CO_2`?

Answer 1

The mass of 1.5 moles of `CO_2` is 66 grams

Explanation:

Let:
`n` be the number of moles
`m` be the mass
`M` be the molecular weight

`n = 1.5mol`

By definition:

`n = m/M`

`m = n*M`

`M(C) = 12g//mol`
`M(O_2) = 2*16g//mol= 32g//mol`
`M = 12g//mol + 32g//mol`
`M = 44g//mol`

`m = 1.5mol*44g//mol`
`m = 66g`