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Answer the following problems showing all work.
1. A sample of urea contains 1.121g N, 0.161g H, 0.480g C and 0.640gO. What is the Empirical Formula?
2. A compound consists of 69.6% S and the rest of nitrogen. If the molar mass of the compound is 184g/mole, what is the MF and EF?
3. Determine the MF if the compound has an EF of NPCl2 and a molar mass of 348g/mole?
Answer: 1) C1H4N2O1, 2) N4S4, 3) N3P3Cl6