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Please check if 7,8,9 are correct and solve 10

Please check if 7,8,9 are correct and solve 10

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please check if 7,8,9 are correct and solve 10

QUESTION 7 Suppose that you weigh out 6.95 g of CuSO4.5 H₂0 at the beginning of the experiment. How many moles of Cu2+ are present in this sample? Express your answer to 3 significant figures, and do not include units! 0.0278 QUESTION 8 What is the molar mass of the [Cu(NH3)4]SO4 H₂O product that you will isolate at the end of this experiment? Express your answer to 2 decimal places. 245.66 QUESTION 9 If you use 6.95 g of the CuSO4 5 H₂O starting material, what mass in grams of the [Cu(NH3)4]SO4 H₂O product would you expect to isolate at the end of the reaction? Include 3 significant figures in your answer. This mass represents the theoretical yield of the product. 6.83 QUESTION 10 Suppose that you start with 6.95 g of the CuSO4 5 H₂O starting material, but you only isolate 5.06 g of the [Cu(NH3)4]SO4 H₂O product. What is the percentage yield of this reaction? Include 3 significant figures in your answer. Just type the number in the answer box - do not type the % symbol!
Transcribed Image Text:QUESTION 7 Suppose that you weigh out 6.95 g of CuSO4.5 H₂0 at the beginning of the experiment. How many moles of Cu2+ are present in this sample? Express your answer to 3 significant figures, and do not include units! 0.0278 QUESTION 8 What is the molar mass of the [Cu(NH3)4]SO4 H₂O product that you will isolate at the end of this experiment? Express your answer to 2 decimal places. 245.66 QUESTION 9 If you use 6.95 g of the CuSO4 5 H₂O starting material, what mass in grams of the [Cu(NH3)4]SO4 H₂O product would you expect to isolate at the end of the reaction? Include 3 significant figures in your answer. This mass represents the theoretical yield of the product. 6.83 QUESTION 10 Suppose that you start with 6.95 g of the CuSO4 5 H₂O starting material, but you only isolate 5.06 g of the [Cu(NH3)4]SO4 H₂O product. What is the percentage yield of this reaction? Include 3 significant figures in your answer. Just type the number in the answer box - do not type the % symbol!
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