1) MKClO3=122,5g/mol
n=m/M=2,45/122,5=0,02 moli KClO3
2KClO3 -> 2KCl + 3O2
2 moli KClO3.............2 moli KCl
0,02 moli KClO3.....x=0,02 moli KCl
MKCl=74,5g/mol
n=m/M=>m=n*M=0,02*74,5=1.49g KCl
2. Ca + 1/2O2 -> CaO
0,5 moli O2...................1 mol CaO
5 moli O2......................x=5/0,5=10 moli CaO
MCaO=56g/mol
n=m/M=>m=560g CaO