Question: 1. Indicate whether the following statement is true or false and explain your reasoning: All compounds with the same empirical formula are isomers of each

1. Indicate whether the following statement is true or false and explain your reasoning: All compounds with the same empirical formula are isomers of each other. Look up a definition of isomer if this term is unfamiliar.

2. A compound containing only P, O, and Zn is used as a dental cement. A sample of the cement is analyzed and gives 33.16% O and 16.04% P. Determine the empirical formula of the cement.

3. What is the % oxygen in a sample of iron (III) sulfate?

4. Combustion analysis of a 33.4 g sample of ascorbic acid (which contains only C, H and O) produced 50.08 g of CO2 and 13.67 g of H2O. Mass spectroscopy revealed the molar mass of the sample to be 176.12 g/mole. What is the % composition (by mass) and molecular formula of the ascorbic acid?

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