Sodium hydroxide, naoh, is a strong base that is used in industrial synthesis and processes such as making paper.
what is the mass of 2.70 ×1022 formula units of naoh (molar mass = 40.0 g/mol)?

1.792 g

We are given;

We are required to determine the mass of NaOH in the given formula units;

1 mole of NaOH = 6.022 × 10^23 formula units

Moles of NaOH = 2.70 ×10^22 ÷  6.022 × 10^23 formula units/mol

                          = 0.0448 moles      

Moles = mass ÷ Molar mass

Therefore,

Mass = Moles × Molar mass

        = 0.0448 moles × 40.0 g/mol

        = 1.792 g

Thus, the mass of 2.70 × 10^22 formula units of NaOH is 1.792 g

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