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Chemistry
Greyson Patton
8 March, 02:19
How many molecules of h2o are equal to 97.2 g h2o
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Pace
8 March, 05:52
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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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