Problem: A 0.486 gram sample of a metal, M, reacts completely with sulfuric acid according to:M(s) + H2SO4(aq) → MSO4(aq) + H2(g)A volume of 221 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr and the temperature is 25°C. The vapor pressure of water at various temperatures can be found in this table. Calculate the molar mass of the metal. 

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A 0.486 gram sample of a metal, M, reacts completely with sulfuric acid according to:

M(s) + H2SO4(aq) → MSO4(aq) + H2(g)

A volume of 221 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr and the temperature is 25°C. The vapor pressure of water at various temperatures can be found in this table. Calculate the molar mass of the metal. 


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Based on our data, we think this problem is relevant for Professor Mandelshtam's class at UCI.