Question

You combine 13 g of magnesium with 5 g of nitrogen to form a compound.

What is the mass percent of nitrogen in the compound?

Answer 1

`\large \boxed{28 \, \% }`

Step-by-step explanation:

magnesium + nitrogen ⟶ Product

13 g 5 g

Mass of product = 13 g + 5 g = 18 g

The product contains 5 g of nitrogen .

`\text{Percent N} = \frac{\text{5 g}}{\text{18 g}} * \, 100\% = \mathbf{28 \, \%}\\\text{The percent by mass of nitrogen is $\large \boxed{\mathbf{28 \, \% }}$}`