# chemistry

posted by maria

how many carbon particles are there in 4.25 mole of C6 H12 O6?

i do not get how to solve this. my teacher said something about conversion factors but i still don't understand how u isolate the carbon from the whole compound. can someone please explain how to get to this, step by step??

-- thank you =)

1. DrBob222

Your teacher is talking about the conversion factor to convert moles C6H12O6 to moles C. That is how you isolate C from the whole molecule.
There are 6.02 x 10^23 molecules (particles) of C6H12O6 in a mole of anything (in this case a mole of C6H12O6). So how many molecules are in 4.25 moles. That must be obvious that it is 4.25 x the number in a mole but to do it with conversion factors works like this.
4.25 moles C6H12O6 x (6.02 x 10^23 molecules C6H12O6/1 mole C6H12O6) = 2.558 x 10^24 molecules C6H12O6. Some call this the unit factor method and some call it dimensional analysis. At any rate, note that the factor is placed (it could be upside down if necessary) so that the unit we don't want (moles in this case) cancel and the unit left standing is molecules (particles) and we want the answer in molecules. So far so good BUT we have the number of molecules in 4.25 moles C6H12O6. So now we use another factor to convert from moles C6H12O6 to moles C.
2.558 x 10^24 molecules C6H12O6 x (factor) = ?? moles C
2.558 x 10^24 molecules C6H12O6 x (6 molecules C/1 molecule C6H12O6) = 1.535 x 10^25 molecules C which I would round to 1.54 x 10^25. Note again that molecule C6H12O6 cancel and leaves standing the unit we want which is molecules C. Please respond if this is not clear but explain what you don't understand about it. This could have been done in one step by using the two factors at the same time; ie.,
4.25 moles C6H12O6 x factor x factor.
4.25 moles C6H12O6 x (6.02 x 10^23 molecules/1 mole C6H12O6) x (6 molecules C/1 molecule C6H12O6) = 1.54 x 10^25 molecules C.
Check my thinking. Check my arithmetic.

## Similar Questions

1. ### Chemistry question

Why does something acid based disolve something carbon based?
2. ### Chemistry (Check)

Classify each of these statements as always true, sometimes true, or never true 1)___AT_____A mole of a pure substance contains 6.02 X 1023 atoms. 2)____ST____The representative particle of a compound is the molecule. 3)___NT_____A …
3. ### chemistry

i cant understand anything in carbon and its compounds. can you give me any the basics of what i need to learn in carbon and its compounds Carbon has a usual oxidation state(valence) of +4 and it can bond to itself. Therefore, there …
4. ### AP Bio - same question

My teacher said this is a very hard question, but I'm trying to make an attempts. Can you guide me?
5. ### chem

A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the mass of a carbon nucleus?
6. ### Chemistry

Just having some trouble with this chemistry problem.. Thanks for help! Toxic carbon monoxide (CO) gas is produced when fossil fuels such as petroleum burn without enough oxygen. The CO can eventually be converted to CO2 in the atmosphere. …
7. ### Chemistry (My previous post lacked something)

Question: At STP propane (C3H8) burns in oxygen to form 2.15L of carbon dioxide and water. The question is in 4 parts. I just need the first: a)What mass of oxygen is necessary for this reaction?
8. ### Chemistry

Ik this has been answered, but doesn't the copper oxide have something to do with it?
9. ### physics

before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1. what fraction of carbon is carbon-14
10. ### physics

before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1. what fraction of carbon is carbon-14

More Similar Questions