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23. The gasoline tank of a car contains 50 liters of gasoline and alcohol, with alcohol comprising 25%. How much of the mixture (in liters) must be drawn off and replaced by alcohol so that the tank contains a mixture of which 50% is alcohol? a. 12.27 b. 13.56 c. 14.76 d. 16.67

23. The gasoline tank of a car contains 50 liters of gasoline and alcohol, with alcohol comprising 25%. How much of the mixture (in liters) must be drawn off and replaced by alcohol so that the tank contains a mixture of which 50% is alcohol? a. 12.27 b. 13.56 c. 14.76 d. 16.67

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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23. 24. 25. The gasoline tank of a car contains 50 liters of gasoline and alcohol, with alcohol comprising 25%. How much of the mixture (in liters) must be drawn off and replaced by alcohol so that the tank contains a mixture of which 50% is alcohol? a. 12.27 b. 13.56 c. 14.76 d. 16.67 A man makes a business trip from his house to Batangas in 2 hours. One hour later, he returns home in traffic in traffic at a rate of 20 kph less that his going rate. If he is gone a total of 6 hours, how fast did he travel going back home? a. 30 kph b. 40 kph c. 60 kph d. 80 kph A man can row his boat at a constant rate of 5 mph in still water. He rows upstream for 15 minutes and then rows downstream, returning to his starting point in another 12 minutes. What is the rate of the current in mph? a. 0.65 b. 0.43 c. 0.34 d. 0.56
Transcribed Image Text:23. 24. 25. The gasoline tank of a car contains 50 liters of gasoline and alcohol, with alcohol comprising 25%. How much of the mixture (in liters) must be drawn off and replaced by alcohol so that the tank contains a mixture of which 50% is alcohol? a. 12.27 b. 13.56 c. 14.76 d. 16.67 A man makes a business trip from his house to Batangas in 2 hours. One hour later, he returns home in traffic in traffic at a rate of 20 kph less that his going rate. If he is gone a total of 6 hours, how fast did he travel going back home? a. 30 kph b. 40 kph c. 60 kph d. 80 kph A man can row his boat at a constant rate of 5 mph in still water. He rows upstream for 15 minutes and then rows downstream, returning to his starting point in another 12 minutes. What is the rate of the current in mph? a. 0.65 b. 0.43 c. 0.34 d. 0.56
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