Question: Water molecules H2O [molar mass M = 18 g/mol] can erystallize and form snowflakes by hydroge bonding. A typical snowflake has 5.0 mg and

Water molecules H2O [molar mass M = 18 g/mol] can erystallize and

Water molecules H2O [molar mass M = 18 g/mol] can erystallize and form snowflakes by hydroge bonding. A typical snowflake has 5.0 mg and diameter of about d = 6.0 mm. The binding mass m = energy of a hydrogen bond is ER 21 kJ/mol. On a sunny winter day, at temperatures below the freezing temperature Trooe -0C, a snowflake evaporates in about two minutes. a) Estimate the heat necessary to evaporate a snowflake!

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