Question

Question #e864f

Answer 1

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

Explanation:

The theoretical ratio is `24/ 16` : Mg/O by mass which reduces to a `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 `0.5/0.4` = `( Mg)/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.