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What is the mass number of an atom of 5 protons and 7 nuetrons
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Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.
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What is the mass number of an atom of 5 protons and 7 nuetrons...
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