Răspuns:
KClO3
Explicație:
-se afla masa de KClO3 pura
mp=p.mi :100
mp=80 . 500 :100=400 g KClO3 pur
400g xg yg
2KClO3=2 KCl + 3O2
2.122,5g 2.74,5g 3.32g
x=400.2 .74,5 : 2 .122,5=243,3 g KCl
n= 243,3g : 74,5g/moli=3,26 moli KCl
y=400 .96 :245=156,73 g O
n= 156,73g : 32g/moli=4,89 moli oxigen
MKClO3=39 +35,5 +3.16=122,5---->122,5g/moli
MKCl=39+ 35,5=74,5---->74,5g/moli
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