Manufacturing traditional clayware ceramics typically involves driving off the water of hydration in the clay minerals. the rate constant for the dehydration of kaolinite, a common clay mineral, is 1×10−4s−1 at 485 ∘c and 1×10−3s−1 at 525 ∘c. calculate the activation energy for the dehydration of kaolinite.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore