Chemistry, 07.05.2020 11:00, jjmarie612

1. A sample of a gas is called ethane is analyzed and found to be 80.0g carbon and 20.0g hydrogen. What is the empirical formula for this compound?

2. A compound contains 31.2% Ca, 18.8% C, and 50.0% O. What is the empirical formula for the compound?

3. Determine the empirical formula for a compound that is composed of 43.7% phosphorus and 56.3% oxygen.

4. What is the empirical formula for a sample that contains 44.3g copper and 55.7g bromine?

5. Calculate the percentage of water in the hydrate manganese (II) nitrate tetrahydrate. (Hint: Do you need to write the formula for the hydrate?)

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