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OpenStudy (anonymous):
A volume of 229 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. Calculate the atomic mass of the metal.
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OpenStudy (pottersheep):
Use the PV = nRt formula You find n (you have everything else) then find with molar mass using n
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