You see, during the day the ocean collects heat from the sun. So the air above the ocean get warm at night, but the rest of the air on the land gets cooler because water has the ability to collect energy from the Sun.
It would be 2300000 grams.
Answer:
W = - 118.24 J (negative sign shows that work is done on piston)
Explanation:
First, we find the change in internal energy of the diatomic gas by using the following formula:
![\Delta\ U = nC_{v}\Delta\ T](https://tex.z-dn.net/?f=%5CDelta%5C%20U%20%3D%20nC_%7Bv%7D%5CDelta%5C%20T)
where,
ΔU = Change in internal energy of gas = ?
n = no. of moles of gas = 0.0884 mole
Cv = Molar Specific Heat at constant volume = 5R/2 (for diatomic gases)
Cv = 5(8.314 J/mol.K)/2 = 20.785 J/mol.K
ΔT = Rise in Temperature = 18.8 K
Therefore,
![\Delta\ U = (0.0884\ moles)(20.785\ J/mol.K)(18.8\ K)\\\Delta\ U = 34.54\ J](https://tex.z-dn.net/?f=%5CDelta%5C%20U%20%3D%20%280.0884%5C%20moles%29%2820.785%5C%20J%2Fmol.K%29%2818.8%5C%20K%29%5C%5C%5CDelta%5C%20U%20%3D%2034.54%5C%20J)
Now, we can apply First Law of Thermodynamics as follows:
![\Delta\ Q = \Delta\ U + W](https://tex.z-dn.net/?f=%5CDelta%5C%20Q%20%3D%20%5CDelta%5C%20U%20%2B%20W)
where,
ΔQ = Heat flow = - 83.7 J (negative sign due to outflow)
W = Work done = ?
Therefore,
![-83.7\ J = 34.54\ J + W\\W = -83.7\ J - 34.54\ J\\](https://tex.z-dn.net/?f=-83.7%5C%20J%20%3D%2034.54%5C%20J%20%2B%20W%5C%5CW%20%3D%20-83.7%5C%20J%20-%2034.54%5C%20J%5C%5C)
<u>W = - 118.24 J (negative sign shows that work is done on piston)</u>
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