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mC2H5OH=2*12u+6*1u+16u=46u
mAlPO4=27u+31u+4*16u=122u
mMgO=24u+16u=40u
Masa molowa:
Masa molowaC2H5OH=2*12+6*1+16=46g/mol
Masa molowaAlPO4=27+31+4*16=122g/mol
Masa molowaMgO=24+16=40g/mol
PbO2 + 4HCl---->PbCl2 + Cl2 + 2H2O
Pb(+IV) + 2e ---->Pb(+II)
2Cl(-I) - 2e ---->Cl2(0)
SO2 + Br2 + 2H2O---->2HBr + H2SO4
S(+IV) - 2e ---->S(+VI)
Br2(0) + 2e ---->2Br(-I)