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Korolek [52]
3 years ago
7

At what temperature will a fixed amount of gas with a volumeof

Chemistry
1 answer:
svetlana [45]3 years ago
4 0

Answer:

260K

Explanation:

We use the general gas equation to solve this. The mathematical form can be represented as follows:

P1V1/T1 = P2V2/T2

We are to look for T2 from the question, rearranging the equation yields:

T2 = T1P2V2/P1V1

So what information do we have from the question:

T2= ?

P2 = 640mmHg

V2 = 198L

P1 = 760mmHg

T1 = 273K as they gas is at S.T.P since pressure is 760mmHg which is the standard pressure

V1 = 175L

We now substitute all these values:

T2 = (273 * 640 * 198)/(760 * 175)

T2 = 260K

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Two systems with heat capacities 19.9 J mol-1 K-1 and 28.2 ] mol 1 K-1 respectively interact thermally and come to an equilibriu
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Answer : The initial temperature of system 2 is, 19.415^oC

Explanation :

In this problem we assumed that the total energy of the combined systems remains constant.

-q_1=q_2

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where,

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C_2 = heat capacity of system 2 = 28.2 J/mole.K

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T_2 = initial temperature of system 2 = ?

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