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How many molecules are present in 1 mole of O2? How many molecules are present in 1 mole of H2O?
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When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two
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How many molecules are present in 1 mole of O2?
How many molecules are present in 1 mole of H2O?...
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