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21-02-2018
Chemistry

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how many molecules of h2o are equal to 97.2 g h2o

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Dejanras Dejanras

02-03-2018

m(H₂O) = 97,2 g.
n(H₂O) = m(H₂O) ÷ M(H₂O).
n(H₂O) = 97,2 g ÷ 18 g/mol.
n(H₂O) = 5,4 mol.
N(H₂O) = n(H₂O) · Na.
N(H₂O) = 5,4 mol · 6,023·10²³ 1/mol.
N(H₂O) = 3,25·10²⁴ molecules of water.
n - amount of substance.
Na - Avogadro number.

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lmfdkma lmfdkma

03-04-2020

Answer:

3.25*10^24

Explanation:

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