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294=masa H2SO4
41,25=masa H2SO4 dana w zadaniu
67,2=objetosc wodoru
x=szukana objetość wodoru
41,25-67,2/294=15,1
150*1,1=165g
ms=cp*mr/100% = 25%*165/100=41,25
15,1-100%
x - 90%
x=13,59dm3