We’re being asked to determine the empirical formula of a compound composed of Se and Br given the mass of Se and Br.
Recall that the empirical formula is the simplest whole-number ratio formula of a compound.
For this problem, we need to do the following steps:
Step 1: Calculate the percent mass of Se and Br
Step 2: Calculate the mass and moles of Se and Br in the compound.
Step 3: Determine the lowest whole number ratio of Se and Br to get the empirical formula.
A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound.
1.443 g Se, 5.841 g Br
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Empirical Formula concept. You can view video lessons to learn Empirical Formula. Or if you need more Empirical Formula practice, you can also practice Empirical Formula practice problems.