which of the following equations does not demonstrate the law of conservation of mass
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The equation P4 + SO2 → 2P4O10 does not demonstrate the law of conservation of mass.
In equation P4 + SO2 → 2P4O10, the mass of the reactants are not equal to the mass of the products. Therefore, this equation does not obey the law of conservation of mass.
Hence, we can conclude that option C is the answer.
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