Question

Question #ba64c

Answer 1

Let's underthink the problem....suppose you had `"3 dozen"` individual water molecules, i.e. `36` molecules......

Explanation:

Do you agree that in this scenario we gots 36 individual oxygen atoms, and 72 hydrogen atoms? Yea or nay?

The question here specified `3.4*mol` water molecules, which has a mass of `3.4*molxx18.01*g*mol^-1=61.2*g` of water......

But a mole is simply a numerical quantity....i.e. `N_A=6.022xx10^23*mol^-1`.

And so back to your problem, we gots....

`3.4xxN_A` `"oxygen atoms"` `=` `2.05xx10^24` `"oxygen atoms"`.

And......

`2xx3.4xxN_A` `"hydrogen atoms"` `=` `4.09xx10^24` `"hydrogen atoms"`.

And the moral, the mole is simply a number, admittedly a very large number.......with the property that a mole of `"hydrogen atoms"` has a mass of `1*g`.