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500 trillion = 500x10^12 molecules = 5x10^14 molecules
5x10^14 molecules x 1 mole/6.02x10^23 molecules x 18 gram/mole = 15x 10^-9 grams = 1.5x10^-8 g
This is obviously a very small amount of water.

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7y ago
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1mo ago

The mass of 1 molecule of water is approximately 18 Atomic Mass units. Therefore, the mass of 500 trillion molecules of water would be approximately 9 trillion atomic mass units, which is roughly 9 grams.

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Q: What is the mass of 500 trillion molecules of water?
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