A 1-m³ rigid tank with air at 1 MPa and 400 K is connected to an air line. The valve is opened and air flows into the tank until the pressure reaches 5 MPa, at which point the valve is closed and the temperature inside is 450 K. 16. Determine the initial mass in the tank 8.71 kg 0.00871 kg 0.04355 kg 43.55 kg 38.71 kg 7.743 kg 17. Determine the final mass in the tank a. b. C. d. e. f. a. b. C. d. 43.55 kg 38.71 kg 7.743 kg 18. The tank eventually cools to room temperature, 300 K. What is the pressure inside the tank then? 4.4 MPa 3.3 MPa 3.75 MPa e. f. 8.71 kg 0.00871 kg 0.04355 kg a. b. C. d. 750 kPa e. 667 kPa f. 889 kPa

A 1-m³ rigid tank with air at 1 MPa and 400 K is connected to an air line. The valve is opened and air flows into the tank until the pressure reaches 5 MPa, at which point the valve is closed and the temperature inside is 450 K. 16. Determine the initial mass in the tank 8.71 kg 0.00871 kg 0.04355 kg 43.55 kg 38.71 kg 7.743 kg 17. Determine the final mass in the tank a. b. C. d. e. f. a. b. C. d. 43.55 kg 38.71 kg 7.743 kg 18. The tank eventually cools to room temperature, 300 K. What is the pressure inside the tank then? 4.4 MPa 3.3 MPa 3.75 MPa e. f. 8.71 kg 0.00871 kg 0.04355 kg a. b. C. d. 750 kPa e. 667 kPa f. 889 kPa

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

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A 1-m³ rigid tank with air at 1 MPa and 400 K is connected to an air line. The valve is opened and air flows into the
tank until the pressure reaches 5 MPa, at which point the valve is closed and the temperature inside is 450 K.
16. Determine the initial mass in the tank
8.71 kg
0.00871 kg
0.04355 kg
43.55 kg
38.71 kg
7.743 kg
17. Determine the final mass in the tank
a.
b.
C.
d.
e.
f.
a.
b.
C.
d.
43.55 kg
38.71 kg
7.743 kg
18. The tank eventually cools to room temperature, 300 K. What is the pressure inside the tank then?
4.4 MPa
3.3 MPa
3.75 MPa
e.
f.
8.71 kg
0.00871 kg
0.04355 kg
a.
b.
C.
d.
750 kPa
e. 667 kPa
f.
889 kPa

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