We’re being asked to determine the empirical formula of a compound composed of Na, Al, and F, given the mass percent of Na and Al.
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 mass and moles of Na, Al, and F in the compound.
Step 2: Determine the lowest whole number ratio of Na, Al, and F to get the empirical formula.
Determine the empirical formulas of the compounds with the following compositions by mass.
32.79% Na, 13.02% Al, and the remainder % F
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.
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Based on our data, we think this problem is relevant for Professor Parr's class at USC.