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gas stoichiometry question

A foul smelling gas produced by the reaction of HCL and Na2S:

2HCl + Na2S --> 2NaCl + H2S

is collected in and a 1.00 L sample was found.  How many moles were found in the sample knowing the reaction took place under STP conditions and how many grams of HCl are produced by the reaction?


I think some information is missing?  I get 3.25 g HCl which isn't an option..


the choices are

a.) 2 g

b.) 0.82 g

c.) 0.32 g

d.) 8 g


Please help me or let me know what is missing!  Thanks!

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2 Answers