When two substances react chemically to produce a new substance, what is true of the mass of the two substances compared to the mass of the new substance? select one: a. the mass of the two substances is less than the mass of the single substance. b. they have the same mass. c. the mass of the two substances is more than the mass of the single substance.
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When two substances react chemically to produce a new substance, what is true of the mass of the two...
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