Zad. 1
2 Cu + O2 --->2 CuO
mCu=25,4 g
mCuO= 31,8 g
mCu + mO2= mCuO
25,4 g +mO2=31,8 g
mO2= 6,4 g
Zad.2
2 Mg+ O2---> 2 MgO
mO2=48 g
mMgO= 120 g
mMg+ mO2= mMgO
mMg+48 g=120 g
mMg= 72 g
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Zad. 1
2 Cu + O2 --->2 CuO
mCu=25,4 g
mCuO= 31,8 g
mCu + mO2= mCuO
25,4 g +mO2=31,8 g
mO2= 6,4 g
Zad.2
2 Mg+ O2---> 2 MgO
mO2=48 g
mMgO= 120 g
mMg+ mO2= mMgO
mMg+48 g=120 g
mMg= 72 g