Calculate the number of molecules in 210 grams of H2O

1 answer:

4 0

H2O=18.01g/mole. 210g divided by 18.01g/mole=11.653mole. 1 mole has 6.22x10^23 molecules. So there is 11.653x(6.22x10^23) molecules. Just multiply 11.653 by 6.22. Then put it as answerx10^23 molecules

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Finding the Atom's Atomic Number (tells us the specific number of electrons)
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