determine number of water molecules and number of hydrogen and oxygen atoms in 3.26 grams of water. I know how to solve it for water but not for individual hydrogen and oxygen.
Please help!

Question

determine number of water molecules and number of hydrogen and oxygen atoms in 3.26 grams of water. I know how to solve it for water but not for individual hydrogen and oxygen.
Please help!

aaronq · Answer

|dw:1411506237579:dw|

Each water molecule is made of two H atoms and one O atom.

So if you have 12 molecules, you have 12 O atoms and 24 H atoms.

anonymous · Answer

so since I have 1.09x10^23 H20 molecule, do I just divide in 3?

aaronq · Answer

no, each molecule is made of 3 atoms.

O atoms = 1.09x10^23 
H atoms = 1.09x10^23 * 2

anonymous · Answer

oh I think I understood it thanks!!

aaronq · Answer

no problem !