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2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) + 5 H2₂O₂(aq) + 6 H*(aq) → 5 O₂(g) + 2 Mn²+ (aq) + 8 H₂O(1) (a) For the titration, how many moles of MnO4 were required if 48.9 mL of 0.174 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 13.7 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂02 NO → W # 3 * m e d с 4 r f un so t 0.0 Oll y & 7 h u 00 8 O 9

2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) + 5 H2₂O₂(aq) + 6 H*(aq) → 5 O₂(g) + 2 Mn²+ (aq) + 8 H₂O(1) (a) For the titration, how many moles of MnO4 were required if 48.9 mL of 0.174 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 13.7 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂02 NO → W # 3 * m e d с 4 r f un so t 0.0 Oll y & 7 h u 00 8 O 9

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) + 5 H2₂O₂(aq) + 6 H*(aq) → 5 O₂(g) + 2 Mn²+ (aq) + 8 H₂O(1) (a) For the titration, how many moles of MnO4 were required if 48.9 mL of 0.174 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 13.7 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂02 NO → W # 3 * m e d с 4 r f un so t 0.0 Oll y & 7 h u 00 8 O 9
Transcribed Image Text:2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) + 5 H2₂O₂(aq) + 6 H*(aq) → 5 O₂(g) + 2 Mn²+ (aq) + 8 H₂O(1) (a) For the titration, how many moles of MnO4 were required if 48.9 mL of 0.174 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 13.7 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂02 NO → W # 3 * m e d с 4 r f un so t 0.0 Oll y & 7 h u 00 8 O 9
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