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b) mCL2O7= 2*35,5u + 7*16u=183u
c)mC6H12O6 = 6*12u+12*1u+6*16u= 180u
2.
mO2= 2*16u=32u
60u-32u= 28u
28 u ma krzem (Si)
Czyli jest to krzem, a ten związek ma nazwę tlenek krzemu (IV) - SiO2
b)CI2 O7 = 35,5*2+16*7=183u
c)C6H12O6=12*6 + 1*12 + 16*6 = 72+12+96 = 180u
2.EO2 = 60u
E + 16*2 = 60u
E+32u=60u
E= 60 - 32
E= 28 u - Si