Asked by ALISON
A rock is 5.0% by mass fayolite(Fe2SiO4), 7.0% by mass forsterite(Mg2SiO4) and the remainder silicon dioxide. What is the mass percent of each element in the rock?
I have the answers but i don't know how to solve the problem.
How would you in steps solve the problem?
I have the answers but i don't know how to solve the problem.
How would you in steps solve the problem?
Answers
Answered by
DrBob222
I would take a 100g sample which will give you 5.0g of the iron compound, 7.0g of the Mg compound, and 88g SiO2.
5.0g x %Fe in the iron compound = g Fe.
7.0g x %Mg in the Mg compound = g Mg.
%Fe = (gFe/100g)*100
%Mg = )gMg/100g)*100
For Si, compute g Si in the iron cmpd and add to g Si in the Mg cmpd and add to g Si in the SiO2. %Si is done the same way as the others.
I'm sure you get the idea for oxygen.
5.0g x %Fe in the iron compound = g Fe.
7.0g x %Mg in the Mg compound = g Mg.
%Fe = (gFe/100g)*100
%Mg = )gMg/100g)*100
For Si, compute g Si in the iron cmpd and add to g Si in the Mg cmpd and add to g Si in the SiO2. %Si is done the same way as the others.
I'm sure you get the idea for oxygen.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.