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OpenStudy (anonymous):

What mass of manganese(II) chloride must react with sulfuric acid to release 54.5mL of hydrogen chloride gas at STP? MnCl2(s)+H2SO4(aq)→MnSO4(aq)+2HCl(g)

OpenStudy (ipwnbunnies):

We need to find out how many moles of HCl are in 54.5 mL at STP. We can figure out with the ideal gas equation PV = nRT, where 'n' is the amount of moles.

OpenStudy (ipwnbunnies):

STP means standard temperature and pressure, which is 1 atmosphere and 273 K.

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