A sample of water (H2O) contains 1.81 x 10^24 molecules. How many moles of atoms are there in this sample?

asked by @oliviat25 • about 1 year ago • Chemistry • 5 pts
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1 answer

Hey there! So water has 2 atoms of hydrogen and an oxygen atom for every molecule. That means you will have 3 atoms in each molecule. Now you just have to multiply 3 by the given number of water molecules so:

3 x 1.81 x 10^24

that will give you 5.43x10^24 atoms.

I hope this helps!

answered by @leot1 • about 1 year ago