Atom composition (simple question but hard for me)

AI Thread Summary
The discussion focuses on calculating the value of x in the compound Fe3(Co)x, given that iron (Fe) constitutes 33.26% by mass. The initial calculation attempted to find x but resulted in 5.6, while the correct answer is stated to be x=12. There is a clarification regarding the chemical notation, confirming that "Co" refers to cobalt, not carbon monoxide (CO). The thread highlights the importance of accurate calculations and understanding chemical composition. The conversation emphasizes the challenge of mastering stoichiometry in chemistry.
asz304
Messages
107
Reaction score
0

Homework Statement



Fe3(Co)x, Fe is 33.26% by mass. Find the value of x.

The Attempt at a Solution



167.5425 g / 0.3326 = x ( 58.9326 g) / 0.6628

x = 5.6...

but the right answer given was x=12.

question #30:http://www.chem.mun.ca/courseinfo/c1050/Louise_Dawe/Basic%20Chemical%20Concepts%20I.pdf"

Thanks
 
Last edited by a moderator:
Physics news on Phys.org
Co or CO?
 
Co, cobalt.
 
Thread 'Confusion regarding a chemical kinetics problem'
TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...

Similar threads

Back
Top