[psych_lover1]

An important function of Iron is to transport oxygen to various organs. All of adult human blood contains about 3.0 g of Iron. There are about 2.6 x 1013 red blood cells in all of the adult human blood.

a. How many moles of Iron are present in all of the adult human blood?
b. How many iron atoms are in each blood cell?

For this problem, I thought the method was to convert to moles for problem A.
So what I did was 3.0g Fe*1/55.85g=.0537 moles. I am guessing that is A
For B, converting to atoms, so taking 2.6*10^13*6.022810^23=1.565*10^37

Please tell me what I am doing wrong or right.

Another problem I am stuck on is:
2) On an alien planet, two different scales are used. Two quantities in both scales are given below:
23.3 zics = 1 zac 12.2 quarks2 = 2.2 zircs
Convert 398.0 zircs/(zic)2 to quarks/zac

What I did for this is:
398.0 zircs(zic)^2/1*(1zac/23.3 zics)*(12.28 quarks/2.2 zircs)=94.724zac/quarks.

Please let me know if I did this correctly.

[Borek]

For this problem, I thought the method was to convert to moles for problem A.
So what I did was 3.0g Fe*1/55.85g=.0537 moles. I am guessing that is A

Good.

For B, converting to atoms, so taking 2.6*10^13*6.022810^23=1.565*10^37

No. You calculated number of moles in A, convert now number of moles from to number of atoms. You will have number of atoms, you are given number of blood cells...

zircs/(zic)2 (...) quarks/zac

(...) zircs(zic)^2 (...) zac/quarks.

Perhaps it is just a matter of errors in copying, but neither zircs(zic)² is zircs/zic² nor quarks/zac is zac/quarks, so nothing goes according to the question.