Question

How many iron atoms are there in 2.50moles of each of the following?

FeWO4 = ? atoms of Fe

Could someone explain this step by step???

Answer 1

FeWO4?

Answer 2

yes, Fe W O4

Answer 3

wat is W>>>?

Answer 4

w is tungsten with atomic weight of 183.84

Answer 5

Ok......

No : of moles = Mass / Molar mass

Answer 6

1 st find the mass..

Answer 7

The mass of FeWO4 I got was 303.69g, and for the Fe I have 55.85

Answer 8

FeWO4 = 56 + 183+ 64 = ? = Molar Mass

Answer 9

Ok....Find mass

Answer 10

Isnt that the mass..?

Answer 11

That is molar Mass

Answer 12

So, Iron (II) tungstate
\[2.5moles~FeWO_4 \times \frac{6.02 \times 10 ^{23} atoms~of~FeWO_4}{1mole~of~FeWO_4} =1.51 \times 10^{24} \\ \\ 1.51 \times 10^{24} \text{ Multiplied by 7 since there's 7 atoms}\\ \\ =1.05 \times 10^{25} atoms\]

Answer 13

that looks beautiful. but.. where did you get the seven from?

Answer 14

2.50 * 303.69= 759.225 = mass

Answer 15

There are 7 atoms in FeWO4

Answer 16

@.Sam. the question asks for no of Fe atom

Answer 17

@.Sam. I think there's 6?? 1 +1+4??

and @Yahoo! Okay, I got to there as well... how what?

Answer 18

now* oh and thank you guys for your help!

Answer 19

Do u have answer key with u

Answer 20

No, I don't..

Answer 21

i am sure,,,that sam.....got it..wrong..)

Answer 22

My answer is 8.18 * 10^24 atoms

Answer 23

How did you get there?

Answer 24

is the first step 2.50moles of FeWO4 x 6.022 x 10^23 particles of FeWO4/ 1mole

Answer 25

Silvermouse has it - you divide by 1 mole of FeWO4 so you can multiply by Avagadro's number (6.022 * 10^23) that will get you units of *atoms, or *particles, *formula units it a set conversion number to determine any of those units I've *listed.