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