Answer to Question #66891 in General Chemistry for Josh

Question

1. How many grams of calcium hydride are needed to form 4.500 g of hydrogen gas?
Express your answer using four significant figures.

2. 1.22 g H2 is allowed to react with 10.4 g N2, producing 1.24 g NH3.
What is the theoretical yield in grams for this reaction under the given conditions?
Express your answer to three significant figures and include the appropriate units.

3. What is the percent yield for this reaction under the given conditions?
Express your answer to three significant figures and include the appropriate units.

4. How many grams of NH3 can be produced from 3.15 mol of N2 and excess H2.
Express your answer numerically in grams.

5. How many grams of H2 are needed to produce 12.34 g of NH3?
Express your answer numerically in grams.

6. How many molecules (not moles) of NH3 are produced from 6.66×10−4 g of H2?
Express your answer numerically as the number of molecules.

Answer 1

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