Given that,
Work done by the system = 125 J
Energy released when it cools down = 438 J
To find,
The change in internal energy.
Solution,
As heat is released by the system, Q = -438 J
Work done by the system, W = -125 J
Using the first law of thermodynamics. The change in internal energy is given by :
So, the change in internal energy is 563 J.
The name of the supercontinent was PANGEA. There are two ancient supercontinent that were seperated by thethys sea and now formed or emmerge and now called Pangeae supercontinent. Laurasia and Gondwana was the two supercontinent that formed part of the Pangaea supercontinent. So the answer in this question is B. Pangea.
Answer:
False
Explanation:
The increase in the temperature of a liquid also increases the rate of evaporation, as the same for the other way around. As intermolecular force increase rate of evaporation decreases. This happens because intermolecular force make it less likely for the molecules on the surface to escape from liquid and become vapour gas. As temperature increases rate of evaporation increases.
The solubility product constant of a compound is calculated by the product of its corresponding ion concentration. The dissociation reaction would be as follows:
SrCO3 = Sr2+ + (CO3)2-
Ksp = [Sr2+] [CO3] = <span>5.60 × 10^-10
</span>5.60 × 10^-10 = x^2
x = 2.37x10^-5 mol/L = 3.49x10^-3 g/L
