Question

What is the mass of 2.50×10²² formula units of NaOH (molar mass = 40.0 g/mol)?

a. 1.0 kg
b. 5.0 kg
c. 2.5 kg
d. 10.0 kg

Answer 1

The mass of 2.50×10²² formula units of NaOH is a. 1.00×10²⁴ grams.

Step-by-step explanation:

To calculate the mass of 2.50×10²² formula units of NaOH, we need to multiply the number of formula units by the molar mass of NaOH.

Mass NaOH = number of formula units × molar mass of NaOH

Mass NaOH = (2.50×10²²) × (40.0 g/mol) = 1.00×10²⁴ g

Therefore, the mass of 2.50×10²² formula units of NaOH is 1.00×10²⁴ grams.