Module Five Lesson Two Assignment_ Real Life Predictions (9)

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Rocky Mount High School *

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12

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Chemistry

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Nov 24, 2024

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pdf

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3

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Given the following chemical reaction: N 2 + 3H 2 → 2NH 3 How many grams of NH 3 would be produced if you started out with 56 grams of nitrogen gas and 10 grams of hydrogen gas? 113 g NH 3 , Not Selected 68 g NH 3 , Not Selected 181 g NH 3 , Not Selected Correct answer: 57 g NH 3 Feedback Based on your answer Correct! Awesome job! Based on answering correctly Correct! Awesome job! Results for question 2. 2 0 / 1 point In the following chemical reaction: Mg + 2HCl → MgCl 2 + H 2 What would the percent yield of the reaction be if you started with 24.3 g of Mg and after a chemical reaction you only collected 11.2 L of hydrogen gas? 50% , Not Selected 33% , Not Selected 100% , Not Selected Incorrect answer: 0% Feedback Based on answering incorrectly Try again! Remember to do a stoichiometry problem to figure out how many liters of hydrogen should have been collected and then do your percent yield.
Results for question 3. 3 0 / 1 point What is/are the only reason(s) that a reaction may have a percent yield above 100%? Incorrect answer: No reaction will every have a percent yield above 100% for any reason. Impurities and Excess Water , Not Selected Impurities Only , Not Selected Excess Water Only , Not Selected Feedback Based on answering incorrectly Try again! You can have about 100% for 2 reasons. Results for question 4. 4 1 / 1 point What is the percent yield of a reaction that has a theoretical yield of 50.0 grams of product but after an experiment you only collect 40 grams of product? 125% , Not Selected Correct answer: 80% 100% , Not Selected 0% , Not Selected Feedback Based on your answer Correct! Awesome job! Based on answering correctly Correct! Awesome job! Results for question 5. 5
1 / 1 point In a chemical reaction: A + B → AB 80 grams of A will produce 100 grams of AB 100 grams of B will produce 90 grams of AB What is the limiting reactant? AB , Not Selected Correct answer: B Both A & B , Not Selected A , Not Selected Feedback Based on your answer Correct! Awesome job! Based on answering correctly Correct! Awesome job!
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