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3 years ago

5

A rigid tank of 1 in3 contains nitrogen gas at 600 kPa, 400 K. By mistake someone lets 0.5 kg flow out. If the final temperature

is 375 K what is then the final pressure?

1 answer:

tigry1 [53]3 years ago

6 0

Answer:

Final Pressure in the tank after letting 0.5 kg out of the tank is 504.6 kPa

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3 years ago

Four kilograms of carbon monoxide (CO) is contained in a rigid tank with a volume of 1 m3. The tank is fitted with a paddle whee

Juli2301 [7.4K]

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a) 1 m^3/Kg

b) 504 kJ

c) 514 kJ

Explanation:

<u>Given </u>

-The mass of C_o2 = 1 kg

-The volume of the tank V_tank = 1 m^3

-The added energy E = 14 W

-The time of adding energy t = 10 s

-The increase in specific internal energy Δu = +10 kJ/kg

-The change in kinetic energy ΔKE = 0 and The change in potential energy

ΔPE =0

<u>Required </u>

(a)Specific volume at the final state v_2

(b)The energy transferred by the work W in kJ.

(c)The energy transferred by the heat transfer W in kJ and the direction of

the heat transfer.

Assumption

-Quasi-equilibrium process.

<u>Solution</u>

(a) The volume and the mass doesn't change then, the specific volume is constant.

v= V_tank/m ---> 1/1= 1 m^3/Kg

(b) The added work is defined by.

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Q - W = m * Δu

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The heat have (+) sign the n it is added to the system.

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