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4. (After looking at #15 pg 195) An unknown compound decomposes to produce 1.134g of solid iodine (I2) and 100 cm3 of hydrogen gas at standard temperature and pressure. What is the empirical formula of the compound?

A. Read Sections 8.8 to 8.10

B. Do the following problems:

1. (After looking at #10, 11 on pg 190 - 191) Find the percentage composition of Iron oxide. A sample has 28 g iron and 12 g oxygen.

2. Find the percentage composition of a sample of a compound containing 53g Na and 37g O.

3. (After looking at #12, 13, 14 on pg 192, 193, 194)A 39g sample of a gas contains 18g carbon and 21g nitrogen. What is the empirical formula?

4. (After looking at #15 pg 195) An unknown compound decomposes to produce 1.134g of solid iodine (I2) and 100 cm3 of hydrogen gas at standard temperature and pressure. What is the empirical formula of the compound?


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