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x g Na2SO4 - 150 g roztworu
x= 15 g
Masa molowa Na2SO4 = 142 g/mol
Masa molowa Na2SO$ * 10H20 = 322 g/mol
142 g Na2SO4 - 322 g Na2SO4 * 10 H2O
x g Na2SO4 - y Na2SO4 * 10 H2O
y= 322/142*x g Na2SO4 * 10 H2O
25 g Na2SO4 - 100 g roztworu
15+x g Na2SO4 - 150 + 322/142*x
x= 52,325 g Na2SO4
y= 118,6 g Na2SO4 * 10 H2O