# How many atoms are in 131.97 liters of water vapor at STP?

##### 1 Answer

Well the molar volume at

#### Explanation:

And so we take the quotient to get the number of moles.............

Note that this is dimensionally consistent as the

Now we know that in ONE MOLE, there are

And thus.......................

And since an individual gas particles CONTAINS THREE ATOMS, i.e.

How many oxygen atoms, and how many hydrogen atoms?