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v=m/d
v=750g/1,05g/cm3
v=714,29cm3
Z def. stęż. molowego
0,5mola KNO3-------1000cm3 roztworu
xmoli----------------714,29cm3 roztworu
x=0,36mola KNO3
mKNO3=101u
101g------1mol
xg--------0,36mola
x=36,36g KNO3
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