Объяснение:
N(H2O)=n•Na = (m/M)•Na = (8.2/18)•6.02•10²³= 2.74•10²³
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Объяснение:
N(H2O)=n•Na = (m/M)•Na = (8.2/18)•6.02•10²³= 2.74•10²³