posted by mel .
a 2.747g sample of manganese metal is reacted with excess HCl gas to produce 3.24L of H2 at 366K and .927atm and a manganese chloride compound(MnCl0. What is the formula of the manganese chloride compound produced in the reaction?
I hope you made a typo and the (MnCl0 you wrote you intended to be (MnCl). Otherwise, where is the oxygen coming from?
i did have a typo sorry it is MnCl
Convert g Mn in the reaction to mols.
Use PV = nRT to calculate mols H2.
Use those two numbers to determine the formula. You should obtain MnCl2.
Scratch that answer of MnCl2. It may not be that at all.