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1,5mol - x
x=1,5*14=21g
164g Ca(NO3)2 - 28g azotu
x - 21g
x=164*21/28=123g
mZnSO4*6H2O=65+32+4*16+12*1+6*16=269g/mol
m6H2O=6*18=108g
269g - 108g wody
10g - x
x=108*10/269=4,01g