A sample of 0.0600 g magnesium metal reacted with excess 6.0 M H2SO4 The following data was obtained when the hydrogen gas was collected over water in a gas collection tube over water. Mg + H2SO4 → M9SO4 + H2 Volume of H2 gas collected in gas measuring tube Height of water column in the gas measuring tube Barometric reading 68.75 mL 1.11 cm 76.33 cm Hg H2 temperature Vapor pressure of water 21.0 ° C 26.2 torr The density of Hg = 13.6 g/mL

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