# Question e864f

Apr 30, 2017

Find the total mass and change the mass of each element to a percentage.

#### Explanation:

The theoretical ratio is $\frac{24}{16}$ : Mg/O by mass which reduces to a $\frac{3}{2}$ ratio by mass.

converts this to percentages.

The total is $2 + 3 = 5$

Mg  = 3/5xx100 = 60% Mg

O  = 2/5 xx 100 = 40% O

The experimental ratio is $\frac{0.5}{0.4}$ = $\frac{M g}{O}$

The total is $0.5 + 0.4 = 0.9$

Mg  = 0.5/0.9 = 55.55% Mg

O # = 0.4 /0.9 = 44.44% O

There is a experimental error of 7.5% for the percentage composition for Magnesium.