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70. 50 ml of hydrogen gas was collected over at 23^° C , 740 mm Hg barometric pressure. Hydrogen was produced by the electrolysis of water. The voltage was constant at 2.1 volts, the current averaged 0.50 ampere for 12 minutes and 20 seconds. Calculate Avogadro constant.

Answer» 70. 50 ml of hydrogen gas was collected over at 23^° C , 740 mm Hg barometric pressure. Hydrogen was produced by the electrolysis of water. The voltage was constant at 2.1 volts, the current averaged 0.50 ampere for 12 minutes and 20 seconds. Calculate Avogadro constant.


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