Tuesday, March 17, 2015

3/17 Chemistry update and homework due 3/24

Hi folks,

Lots of math today. We took a look at how to figure out percent compositions and how to find the limiting reagents in a chemical reaction.

Homework due next week is to do the enclosed .pdf and answer the following questions.

1. What is the percent composition of oxygen in ZnSO4?

2. What is the percent composition of Mn in KMnO4?

3. Calculate the empirical formula of a compound with a percent composition of 88.9% oxygen and 11.1% hydrogen.

4. Calculate the empirical formula of a compound with a percent composition of 49.5% carbon 5.2 % hydrogen 16.5% oxygen and 28.8% nitrogen.

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