Sodium hydroxide, naoh , is a strong base that is used im industrial synthesis and processes such as making paper. what is the mass of 2.90*10^22

1.926 g of NaOH

Concept tested: Mole and Avogadro's number

Therefore;

In this case; Our compound is NaOH

Therefore;

1 mole of NaOH contains 6.022 × 10^23 molecules

But; Molar mass of NaOH is 40.0 g/mol

Therefore;

With this we can calculate the mass of 2.90 × 10^22 molecules

Therefore;

Mass of NaOH =(2.90 × 10^22 molecules ÷ 6.022 × 10^23 molecules)40g

                        = 1.9263 g

                        = 1.926 g NaOH

Thus, the mass of NaOH is 1.926 g

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