Calculate the δg for the following system. then state if the system is spontaneous or not spontaneous.
δh = + 25 kj δs = +5.0 j/k t = 23ãƒâ‚ã‚â°c
a)1.5 x 103 kj; not spontaneous
b)+24 kj; not spontaneous
c)+25 kj; not spontaneous
d)1.5 x 103 kj; spontaneous
e)+24 kj; spontaneous
f)+25 kj; spontaneous

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.