Hello ? What compounds are you referring to ?
Answer:
246.28 K
Explanation:
The total energy of one mole of gas molecules can be calculated by the formula given below
E = ![\frac{3}{2}\times R\times T](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B2%7D%5Ctimes%20R%5Ctimes%20T)
Where R is gas constant and T is absolute temperature.
Put the value of R as 8.314 and temperature as 245 , we get
E = ![\frac{3}{2}\times 8.314\times 245](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B2%7D%5Ctimes%208.314%5Ctimes%20245)
= 3055.4 J
Add 16 j to it
Total energy of gas molecules = 3055.4 + 16 = 3071.4 J.
If T be the temperature after addition of energy then
= 3071.4
T =![\frac{2\times 3071.4}{3\times 8.314}](https://tex.z-dn.net/?f=%5Cfrac%7B2%5Ctimes%203071.4%7D%7B3%5Ctimes%208.314%7D)
T = 246.28 K
Answer:
Three, the liquid in the man's cup, the stove is solid, and the air around them is a gas
Explanation:
Answer is C. All of the others are internal/molecular changes.