Empirical Formula Of A Compound Worksheets Page 6

EXPERIMENT 12

Name

Post-Laboratory Questions and Exercises

Due after completing the lab. Answer in the space provided.

1. Why was an evaporating dish more suitable for this lab procedure, rather than using a beaker?

2. How would your experimental formula of magnesium chloride “MgCl

” have been affected if

your product was not dried completely before weighing it? Would “x” be too high or two low?

3. When 6.25 grams of pure iron are allowed to react with oxygen, a black oxide forms. If the product

weighs 8.15 g, what is the empirical formula of the oxide?

4. A compound of nitrogen and oxygen is 30.46% by mass N and 69.54% by mass O. The molar mass if

the compound was determined to be 92 g/mol.

a) What is the empirical formula of the compound?

b) What is the molecular formula of the compound?

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