Mg₃P₂; Mr = 24·3+31·2= 134
Cl₂O₅; Mr =35,5·2+16·5=151
Al₂S₃; Mr =27·2+32·3=150
1. 3Mg+2P=Mg3P2
Mr(Mg3P2)= 134
2. Cl2+2.5O2=Cl2O5
Mr(Cl2O5)=151
3. 2Al+3S=Al2S3
Mr(Al2S3)=150
Mg₃P₂; Mr = 24·3+31·2= 134
Cl₂O₅; Mr =35,5·2+16·5=151
Al₂S₃; Mr =27·2+32·3=150
1. 3Mg+2P=Mg3P2
Mr(Mg3P2)= 134
2. Cl2+2.5O2=Cl2O5
Mr(Cl2O5)=151
3. 2Al+3S=Al2S3
Mr(Al2S3)=150