A student performed the experiment described in this module, using 4.00 mL of a 3.5% H2O2 solution with a density of 1.61 g mL-1. The water temperature was 25 ° C, and the barometric pressure in the laboratory was 30.40 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 79.20 mL of O2. (8) Calculate the number of moles of H2O2 reacting.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A student performed the experiment described in this module, using 4.00 mL of a
3.5% H,O2 solution with a density of 1.61 g ml-1. The water temperature was 25 ° C,
and the barometric pressure in the laboratory was 30.40 in. Hg. After the student
immersed the yeast in the peroxide solution, she collected 79.20 mL of O2.
(8) Calculate the number of moles of H202 reacting.
Transcribed Image Text:A student performed the experiment described in this module, using 4.00 mL of a 3.5% H,O2 solution with a density of 1.61 g ml-1. The water temperature was 25 ° C, and the barometric pressure in the laboratory was 30.40 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 79.20 mL of O2. (8) Calculate the number of moles of H202 reacting.
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To solve this question we need to first calculate the no. of moles of O2 formed during the reaction. Using Ideal gas equation we can easily find the moles of O2 formed.

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