4. A tank contains 80 gal of pure water. Brine solution with 2 lb/gal of salt enters at 2 gal/min, and the well-stirred mixture leaves at the same rate. Find a) the amount of salt in the tank after half an hour, b) determine the limiting value for the amount of salt in the tank after a long time, and c) how much time must pass before the amount of salt in the tank reaches 80% of this limiting value?

4. A tank contains 80 gal of pure water. Brine solution with 2 lb/gal of salt enters at 2 gal/min, and the well-stirred mixture leaves at the same rate. Find a) the amount of salt in the tank after half an hour, b) determine the limiting value for the amount of salt in the tank after a long time, and c) how much time must pass before the amount of salt in the tank reaches 80% of this limiting value?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

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