Moles - Number of particles and Number of atoms.?

Question

I know multiplying the number of moles by avogadro's number gives me the number of particles in that mixture. I am told I need to multiply this by the number of different elements inside, eg. C6H12 's number of particles has to be multiplied by 18 in order to get the number of atoms.

meh... Ok, forgot to add, the question...
Is this correct?

I wish I could put all these as best answers, however I really only needed to know whether it was correct and the first come seemed to help me the best...
Sorry to the others...

Answer 1

yes, it is correct, you have 18 atoms in a C6H12 molecule. so in 1 mole you have, by definition. 18*NAvogadro

Answer 2

The rule is: 1 mole Argon (or any element) contains 6.02 x 10exp23 Argon (element) atoms. Therefore 2.12 moles argon contains 6.02 x 2.12 x 10exp23 argon atoms which equals 1.28 x 10exp24 Remember: 3 significant figures in your answer because the 2.12 is 3 sigfigs and, move the decimal point over to the left so that you have a single digit on the left side of the decimal point. That increases the exponent of the 10.

Answer 3

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Answer 4

Hope this helps.

Avogadro's number can be applied to any substance. It corresponds to the number of atoms or molecules needed to make up a mass equal to the substance's atomic or molecular mass, in grams. For example, the atomic mass of iron is 55.847 u, so Avogadro's number of iron atoms (i.e. one mole of iron atoms) have a mass of 55.847 g. Conversely, 55.847 g of iron contains Avogadro's number of iron atoms. Thus Avogadro's number NA corresponds to the conversion factor between grams (g) and atomic mass units:

And here's another way ...

Mole to Atoms Conversion
How many atoms are present in 17.0 mol of water?

In order to convert mols of a substance to atoms one must first convert mols to molecules

step 1. mols ----> molecules

The relationship between mols and molecules is:

1 mol of any substance = 6.023 X 1023 molecules of that substance.

17.0 moles H2O X 6.023 X 1023 / 1 mole H2O = 102.4 X 1023 = 1.02 X 1025 molecules H2O

step 2. molecules of substance ----> total atoms

That would depend upon the formula of the substance which in this case is H2O

The subscripts that appear right after the symbol representing an element can be interpreted as atoms of that element in one molecule of the substance.

According to the formula for H2O:

1 molecule H2O = 2 atoms H + 1 atom O = 3 atoms total

So once you have determined the number of molecules of H2O from step 1 you then can use the above relationship between molecules and total atoms to determine the total atoms in the number of molecules determined in step 1

1.02 X 1023 molecules H2O X 3 atoms / 1 molecule H2O = 3.06 X 1023 atoms total

Hope it helps and good luck.

Answer 5

A mole is the quantity 6.02 x 10^23 just as a dozen is the quantity 12.

If you have a dozen cars, you have:
12x4 (four dozen) tires [five dozen if you include the spare tire]
12x1 (one dozen) front windshields
12x2 (two dozen) bumpers
etc.

Apply this logic to a molecule.
If you have one mole of water (H2O), you have two moles of hydrogen and one mole of oxygen.

Answer 6

number of *molecules*

number of atoms = number of molecules*(atoms/molecule)