58 666
Assignments Done
Successfully Done
In March 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Other Chemistry Question for cody

Question #15944
How many atoms are in 1.8675g of a recently synthesized organic compound:

1.which has a molar mass between 350 and 400 grams/mole
2.which consists of only iron, carbon and hydrogen
3.when analyzed using combustion analysis on a 0.9437 g sample, produced 2.233 g of CO2 and 0.457 g of H2O?
Expert's answer
We have compound with& formula (C)x(H)y(Fe)o
Let's calculate x,y and o using combustion analysis

2.233 & m=0.6090 g n=0.6090/12= 0.0508
CO2 --------& C
& 44 12

0.457 m=0.0508 g n=0.0508/1=0.0508 mol
18 2*1

m of Fe =0.9437-0.609-0.0508=0.2839 n=0.2839/56= 0.00510

n of C : n of H : n of Fe =10:10:1,& it is something like this (C10H10Fe)z& together it have molar mass& (120+10+56)z= 186z

z=400/186=2 (it's closer to 2) , so it is C20H20Fe2

& 1.8672 & N
C20H20Fe2------------- 42 atoms
& 372 42*6.02 x 10^23

N=1.8672* 42*6.02 x 10^23 /& 372 =3.02 x 10^21 atoms

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question