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Answer 1 · 2015-04-29T07:44:24

#M_M = 116#

From #PV = nRT#, you get #n= (PV)/(RT)#

#n= (37.6 * 0.45)/(8.314 * 353) = "0.00576 moles"#

Then from #n = "grams"/M_M#, you get

#M_M = "grams"/"n"#

#M_M = "0.668 g"/"0.0576 moles" = "115.97 g/mol"#