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How many molecules of H2O are contained in 78.34 grams?
6.342 X 1019 molecules


2.618 X 1024 molecules


5.634 X 1025 molecules


9.984 X 1022 molecules


1.198 X 1026 molecules

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Answer:

4.716x10^25

Explanation:

1 molecule of water is equivalent to 6.02x10^23

hence 78.34 is equivalent to 78.34x6.02x10^23

and the answer is 4.716x10^25

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