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OpenStudy (anonymous):

Potassium has a mass of 39.1 amu. Chloride has a mass of 35.45 amu. By the law of conservation of mass, which is the mass of potassium chloride, when these two ions combine?

OpenStudy (anonymous):

\[74.55=74.6\] (Keeping the rules of significant figures.)

OpenStudy (irishboy123):

it's a chemical reaction. it should all add up in normal way.

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