what is the mass of 2.10 x 10^22 formula units of naoh (molar mass equals 40.0 g/mol)

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11-07-2020
Chemistry

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what is the mass of 2.10 x 10^22 formula units of naoh (molar mass equals 40.0 g/mol)

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SinnerTae SinnerTae · Answer 1 · 2020-07-11T03:25:00+02:00

SinnerTae SinnerTae

11-07-2020

n(NaOH) = N(NaOH) / NA = 2.40 × 1022 / 6.02 × 1023 mol-1 = 0.0399 mol.
m(NaOH) = n(NaOH) × M(NaOH) = 0.0399 mol × 40 g/mol = 1.596 g ≈ 1.60 g.
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Bribri47825 Bribri47825 · Answer 2 · 2021-10-20T19:45:16+02:00

Bribri47825 Bribri47825

20-10-2021

1.39 g

the mass of 2.10×10^23

molar mass 40.0 g/mol

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