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2014-10-04T14:30:50+03:00
BaCl2 + H2SO4 ---> BaSO4 + 2 HCl
c=md/ms * 100 => md = 4,9*40/100 = 1,96 g H2SO4
98 g H2SO4..........2*36,5 g HCl
1.96 g H2SO4..............x g HCl          x = 1,46 g HCl