mole calculations help?

Question

Please can someone walk me through the steps in solving this mole calculations problem.

3.25 X 10^18 molecules SO2

Answer 1

You will need to know Avogadro's Number.

Avogadro's number is 6.02x10^23. It is the number of molecules in a mole.

To calculate moles, divide what you know by Avogadro's number.

3.25x10^18 / 6.02x10^23 = 0.540x10^-5 mol.

If you need grams, then take the answer and multiply by the mass of SO2, which is 64, to get 3.46x10^-4 grams.

Answer 2

so your looking for moles?

do it in the way of setting a dialyasis anaylsis equation. Always start with the given which is 3.25 X 10^18 molecules SO2.

Then do 3.25 X 10^18 molecules SO2/1=1mol/6.02x10^23 molecules. As you look at this, write it down as I explain it to you. Do you see the molecules cancling out? Well cross them out, and you have mol left behind. Then divide 3.25 X 10^18 molecules by 6.02x10^23 . You will get .000005398 as you do this in the caculator. Look at your problem their are 3 significant figures, put your answer in significant figures. So your answer would be .00000540 mols. DON'T FORGET YOUR UNITS!

Hopes this helps.

Answer 3

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Answer 4

6.02x10^23molecule is one mol. So, 3.25X 10^18 molecules/6.02x10^23=5.399x10^-6 mol.

I hope this helps. :)

Answer 5

1 mole + 1 mole = one even bigger, hairier mole!

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