Question

A compound contains magnesium and nitrogen consists of 45% nitrogen. What percentage of magnesium must be in the compound?

Answer 1

Percentage of magnesium must be in the compound is 55%.

Step-by-step explanation:

Percentage of magnesium in the compound = x

Percentage of nitrogen the compound = 45%

Magnesium and nitrogen together form 100 of the compound.

`100\%=x+45\%`

`x=100\%-45\%=55\%`

Percentage of magnesium must be in the compound is 55%.