Answer: B. (A 25 kg ball)
Explanation:
Since , and velocity is the same for all four balls, the ball with the greatest mass will have the greatest kinetic energy (since mass and KE are directly related). Below shows these calculations:
A. m = 5
B. m = 25
C. m = 10
D. m = 1
Explanation:
The relation between change in entropy and is as follows.
The given data is as follows.
mass = 500 g
= 24.4 J/mol K
= 500 K
= 250K
As, atomic mass of copper = 63.54 g /mol. Therefore, number of moles of copper will be calculated as follows.
Number of moles =
=
= 7.86 moles
Hence,
= 750
For the metal block A,
=
= -3.04 J/ K mol
For the block B,
= 4.296
Therefore, calculate the change in entropy as follows.
Total entropy change = 4.296 + (-3.04)
= 1.256 J/Kmol
Thus, we can conclude that the change in entropy for given two blocks of copper is 1.256 J/Kmol
.
Answer:
263 K
Explanation:
Assuming ideal behaviour and constant pressure, we can solve this problem by using Charles' law, which states that at constant pressure:
In this case:
We <u>input the data</u>:
- T₁ * 824.7 mL = 377 K * 575.45 mL
And <u>solve for T₁</u>: