Question

Problem#1 (Marks = 20) (Answer in the space provided, show important calculation steps) The following figure shows a tank fitted with an electric resistor of negligible mass holds 2 kg of carbon dioxide (CO?) gas, initially at 25 °C, 100 kPa. Over a period of 10 minutes, electricity is provided to the resistor at a rate of $W_\text{in} = 0.14$ kW. During the same period, a heat transfer of magnitude 14 KJ occurs from the CO? gas to its surroundings. The gas in the tank behaves as an ideal gas. The gas constant is $R = 0.19$ kJ/(kg.K) and specific heat is $C_v = 0.70$ kJ/(kg.K) for CO?. (0 °C = 273 K) Determine: (a) the final temperature $T_2$ of CO?, in °C, and (b) the final pressure $P_2$ of CO? in kPa.

          Problem#1 (Marks = 20) (Answer in the space provided, show important calculation steps)
The following figure shows a tank fitted with an electric resistor of negligible mass holds 2 kg of
carbon dioxide (CO?) gas, initially at 25 °C, 100 kPa. Over a period of 10 minutes, electricity is provided
to the resistor at a rate of $W_\text{in} = 0.14$ kW. During the same period, a heat transfer of magnitude 14
KJ occurs from the CO? gas to its surroundings. The gas in the tank behaves as an ideal gas. The gas
constant is $R = 0.19$ kJ/(kg.K) and specific heat is $C_v = 0.70$ kJ/(kg.K) for CO?. (0 °C = 273 K)
Determine: (a) the final temperature $T_2$ of CO?, in °C, and (b) the final pressure $P_2$ of CO? in kPa.

Problem#1 (Marks = 20) (Answer in the space provided, show important calculation steps)
The following figure shows a tank fitted with an electric resistor of negligible mass holds 2 kg of
carbon dioxide (CO?) gas, initially at 25 °C, 100 kPa. Over a period of 10 minutes, electricity is provided
to the resistor at a rate of Win = 0.14 kW. During the same period, a heat transfer of magnitude 14
KJ occurs from the CO? gas to its surroundings. The gas in the tank behaves as an ideal gas. The gas
constant is R = 0.19 kJ/(kg.K) and specific heat is Cv = 0.70 kJ/(kg.K) for CO?. (0 °C = 273 K)
Determine: (a) the final temperature T2 of CO?, in °C, and (b) the final pressure P2 of CO? in kPa.

Added by Guillermo S.

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