2NaOH +H2SO4 = Na2SO4 + 2H2O
80 2
16 x=0.4моль
2.
98 142
49-----------х=71
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2NaOH +H2SO4 = Na2SO4 + 2H2O
80 2
16 x=0.4моль
2.
2NaOH +H2SO4 = Na2SO4 + 2H2O
98 142
49-----------х=71