Monday
July 28, 2014

Homework Help: Chemistry

Posted by Chopsticks on Saturday, January 24, 2009 at 7:00pm.

Sometimes, instead of percentages compostion, you will have the composition of a sample by mass. Using the actual mass of the sample, determine the empirical formula for compounds that have the following analyses.

A.
a .858g sample of an unkown substance is composed of .537g of Copper, and .321g of Florine

How would you do this problem? When doing empirical formula, I only know how to do it if its a percentage. Should I divide the amount of copper over the total of the unknown substance to get a percentage and then convert to moles? Help.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - sometimes,instead of percentage composition, you will have the ...
AP Chemistry - An organic compound was synthesized and found to contain only C, ...
ap chemistry - 18. Answer the following question that relate to the analysis of ...
Chemistry - 1) A compound has the following percentages by mass: barium, 58.84...
chemistry - A 12.0g sample of carbohydrate contain 4.50g of carbon, 3.25g of ...
chemistry - you are given samples of two pure compounds, one of which is a gas ...
chemistry - 1.to calculate the percent by massof an element in a known compound...
Chemistry - I need help with this lab. Write the equation for the decomposition ...
Chemistry - For Peroxyacyl nitrate (PAN) A compound of C,H,N,O Determine the ...
Chemistry - what is the molecular formula of a compound that is 54.5% C, 9.09% H...

Search
Members