1 A Student Reacted 4 00 1023 Molecules Of Nitrogen With 1 00 1024 Molecules Of Hydrogen A How Many Grams Of Ammonia 1 (32.08 KiB) Viewed 45 times
1 A Student Reacted 4 00 1023 Molecules Of Nitrogen With 1 00 1024 Molecules Of Hydrogen A How Many Grams Of Ammonia 2 (39.61 KiB) Viewed 45 times
1. A student reacted 4.00×1023 molecules of nitrogen with 1.00×1024 molecules of hydrogen. a) How many grams of ammonia gas will be produced? Circle or block-in your answer. b] Which reactant is the limiting reactant? c] How many molecules of excess reactant remain? 2. A student reacted 50.0 grams of sodium metal with 2.00 moles of oxygen gas. a] How many grams of sodium oxide will be produced? Circle or block-in your answer. b] Which reactant is the limiting reactont? c] How many grams of excess reactant remain?
4. Homes in certain parts of the country contain high levels of the radioactive isotope, radon-222. Radon-222 decays by first-order kinetics with a half-life of 3.82 days. Calculate how many days it would take for 45% of a sample of radon-222 to decay. 5. The half-life of a radioisotope is found to be 4.55 minutes. If the decay follows first order kinetics, what percentage of isotope will remain after 2.00 hours? 6. Give the correct formulas of the following (which you are expected to know):
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