A sample of iron was dissolved iin hydrochloric acid. The liberated hydrogen was collected by displacement of

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A sample of iron was dissolved iin hydrochloric acid. The liberated hydrogen was collected by displacement of water. The hydrogen occupied 262 mL at 26 c. The barometric pressure was 748 torr what mass of iron was disoleved? The vapor pressure of water is 25 torr at 26 c.