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How many moles are 2.54×10^29 molecules of H20​
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How many moles are 2.54×10^29 molecules of H20​

User Slava Ivanov
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Explanation: The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.

User Rianna
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