Question

What is the mass of 2.60 ×10^22 formula units of NaOH (Molar mass = 40.0 g/mol)?

Answer 1

1.728 g NaOH

Step-by-step explanation:

Convert molecules to moles.

• 2.60 ×10^22 molecules NaOH / 6.02 x 10^23 molecules per mol = .043 mol

Convert moles to grams.

• .043 mol x 40.0 g/mol = 1.728 g