What is the mass of one molecule of water?
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0.33 X 10-23
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2.66 X 10 -23
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6.02 X 1023
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1.99 X 10 -23
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2.99 X 10 -23
E
Correct answer
Explanation
Molecular mass of water = 2 + 16 = 18 g
1 mole of water (6.023 X 1023 molecules) weighs 18 g.
Weight of 1 molecule of water = 18 / 6.023 X 1023
= 2.99 X 10 -23
Thus, this is correct.