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A sample of 200 mL of water was collected from a river. From this sample, 5 mL was diluted to 1-L. A BOD bottle (which is 300 mL) was filled with this diluted water and aerated. The dissolved oxygen content of the diluted sample was 7.8 mg/L initially. After 5 days, the dissolved oxygen content had dropped to 4.8 mg/L. What is BOD5 of the river water? 600 mg/L O 15 mg/L O 10 mg/L 3 mg/L

A sample of 200 mL of water was collected from a river. From this sample, 5 mL was diluted to 1-L. A BOD bottle (which is 300 mL) was filled with this diluted water and aerated. The dissolved oxygen content of the diluted sample was 7.8 mg/L initially. After 5 days, the dissolved oxygen content had dropped to 4.8 mg/L. What is BOD5 of the river water? 600 mg/L O 15 mg/L O 10 mg/L 3 mg/L

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A sample of 200 mL of water was collected from a river. From this sample, 5 mL was diluted to 1-L. A BOD bottle (which is 300 mL) was filled with this diluted water and aerated. The dissolved oxygen content of the diluted sample was 7.8 mg/L initially. After 5 days, the dissolved oxygen content had dropped to 4.8 mg/L. What is BOD5 of the river water? 600 mg/L O 15 mg/L 10 mg/L O 3mg/L 2 mg/L
Transcribed Image Text:A sample of 200 mL of water was collected from a river. From this sample, 5 mL was diluted to 1-L. A BOD bottle (which is 300 mL) was filled with this diluted water and aerated. The dissolved oxygen content of the diluted sample was 7.8 mg/L initially. After 5 days, the dissolved oxygen content had dropped to 4.8 mg/L. What is BOD5 of the river water? 600 mg/L O 15 mg/L 10 mg/L O 3mg/L 2 mg/L
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