Empirical Formula Of A Compound Worksheets Page 5

EXPERIMENT 12

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Pre-Laboratory Questions and Exercises

Due before lab begins. Answer in the space provided.

1. a) How many moles of copper atoms are in 150 g of copper metal?

b) How many copper atoms are in this amount of copper?

2. Write the empirical formula for the following compounds containing,

a) 0.0200 mole of Al and 0.0600 mole of Cl.

b) 0.0800 mole of Ba, 0.0800 mole of S, and 0.320 mole of O.

3. When 0.424 g of iron powder is burned in an oxygen atmosphere, 0.606 g of a reddish brown oxide is

obtained. Determine the empirical formula of the oxide.

4. What safety precautions are cited in this experiment?

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