Asked by Sandy East Ward
The temperature, T. of a given mass of gas varies inversely with its volume,V. The temperature of 500 cm3 of a certain gas is 2.5 Celsius. What will the temperature be when it is compressed to a volume of 100cm3
160 c
12.5 c
2500 c
1250 c
I think it's either B or C.
160 c
12.5 c
2500 c
1250 c
I think it's either B or C.
Answers
Answered by
Damon
V T = k
*** IF *** I assume this is true then:
500 * 2.5 = k = 1250
so
100 T = 1250
T = 12.5 C
I guess that is the answer they want, but in fact V T = constant ONLY if you use degrees KELVIN which is degrees C + 273
so really
500 * 275.5 = k = 137,750
so
100 T = 137,750
T = 1377.5 Kelvin
= 1104 Centigrade
*** IF *** I assume this is true then:
500 * 2.5 = k = 1250
so
100 T = 1250
T = 12.5 C
I guess that is the answer they want, but in fact V T = constant ONLY if you use degrees KELVIN which is degrees C + 273
so really
500 * 275.5 = k = 137,750
so
100 T = 137,750
T = 1377.5 Kelvin
= 1104 Centigrade
Answered by
Damon
By the way, that would be impossible without changing the pressure as well.
Answered by
derred
I got a different problem: same words but 90 cm^3 with 25 degrees Celcius and what will it be when compressed to 20 cm^3. I figured out that the numbers are in relation to one another. So I figured out the answer is 6 because the number shrunk, 90 to 20 is almost dividing by 5, same with 25 it is almost divided by 5. That's how I got to my answer, it might be wrong but that's the logic I used
Answered by
derred
OK so I used Damon's strategy it is more likely to be the right way to do it because I got 112.5 and that's an answer choice. So is the formula (a*b)/c
where a, b, and c are the three terms in order in the word problem?
where a, b, and c are the three terms in order in the word problem?
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.