# Question #1c383

May 17, 2017

$C {H}_{2} O$

#### Explanation:

Carbon weight=12 grams
Hydrogen weight=1 gram
Oxygen weight=16 grams

C to H ratio (mass)=6
Therefore for each carbon, you have two units of hydrogen
($\frac{12}{2} = 6$).

So far it is $C {H}_{2}$ but also you have oxygen.

C to O ratio is $\frac{3}{4}$
Since for 1 Carbon (12 grams), you need some oxygen:
$\frac{C}{O} = \frac{3}{4}$
where C=12 grams (for one mole)

$O = \frac{12 \cdot 4}{3}$
$O = 16$ grams

Exactly Oxygen has a weight of 16 grams per mole.

Therefore your formula for this case is;

$C {H}_{2} O$

where you have a molecular weight of 30 grams per mole.

Your formula is $C {H}_{2} O$