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Review A 110 cm3 box contains helium at a pressure of 2.50 atm and a temperature...

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Physics

Review A 110 cm3 box contains helium at a pressure of 2.50 atmand a temperature of 120 ∘C. It is placed in thermal contact with a180 cm3 box containing argon at a pressure of 3.60 atm and atemperature of 420 ∘C.  

What is the initial thermal energy of each gas? Correct answer:41.8 J for He and 98.5 J for Ar

What is the final thermal energy of each gas?

How much heat energy is transferred, and in which direction?

What is the final temperature?

What is the final pressure in each box?

Answer & Explanation Solved by verified expert
4.4 Ratings (846 Votes)
1 First i would compute the amount of gas in each box From ideal gas law follows n PVRT In the helium box are n PVRT 25101325 Pa 11010 m 83145 JmolK 120 273 K 85310 mol The amount of argon is n PVRT 36101325 Pa 18010 m 83145 JmolK 420 273 K 11410 mol The internal energy of an ideal gas is given by U n Cv T The molar heat capacity at constant    See Answer
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