Question

What is the molecular formula of a compound with an empirical formula of CH2O and a molar mass of 150 g/mol?

Answer 1

`C_(5)`
`H_(10)`
`O_(5)`

Step-by-step explanation:

Each CH2O unit has a molar mass of (12 + 2*1 + 16) = 30 g/mole.

The actual compound has a molar mass of 150 g/mole. That means it has 5 CH2O units, since 150/30 = 5

The molecular formula must be
`C_(5)`
`H_(10)`
`O_(5)`

C: 5*12 = 60

H: 10*1 = 10

O: 2*16 = 80

Total = 150 g/mole