K katie h New member Sep 30, 2009 #1 2.The composition of oxides of lead, PbO and PbO2, are explained by the A. law of conservation of energy. B. law of multiple proportions. C. law of definite proportions. D. law of conservation of mass.
2.The composition of oxides of lead, PbO and PbO2, are explained by the A. law of conservation of energy. B. law of multiple proportions. C. law of definite proportions. D. law of conservation of mass.
