Question

Determine the number of formula units in 48.0 grams of magnesium chloride (MgCl2)

Answer 1

Answer:

3.03 x 10²³ formula units

Explanation:

First we convert 48.0 grams of magnesium chloride into moles, using its molar mass:

• 48.0 g ÷ 95.21 g/mol = 0.504 mol MgCl₂

Then we convert 0.504 moles into formula units, using Avogadro's number:

• 0.504 mol * 6.023x10²³ formula units/mol = 3.03x10²³ formula units