Witch object has most potential energy.
a. a ball resting on the ground.
b. a ball being thrown at 100 miles per hour.
c. a ball on top of a refrigerator
d. a ball resting on the edge of a cliff.

Easy definition for atom and atomic mass

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.