# How many moles of #"H"_2"O"# contain #2.60 * 10^23# molecules of water?

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The answer is 0.432 mole of H2O but I dont know how to get that answer. I dont know how to set up the problem

The answer is 0.432 mole of H2O but I dont know how to get that answer. I dont know how to set up the problem

##### 2 Answers

#### Explanation:

Divide the given number of molecules by Avogadro's constant. Avogradro's constant is the number of atoms/molecules in a mole of a substance.

Therefore,

Well, how molecules are present in ONE MOLE of water...?

#### Explanation:

By definition, there are

And so we simply take the quotient....

Instead of the mole, we could use the dozen, or the gross, or some other numerical quantity ... it just happens that one mole of hydrogen ATOMS have a mass of