Give the number of significant figures: 369,132,000 sec

A. 0

B. 6

C. 9

Why are the temperatures lowest in December?

It took Jackie two hours to mow the lawn. Two weeks later it took her one and one-half hours to mow the lawn. What can be said about the amount of power used by Jackie the second time she mowed the lawn?

Which of the following is most likely to be found in a crystalline structure concrete glass plastics quartz

What characteristic is descriptive of a solution?

Which of the following best defines over-the-counter medications? a. medications that require a written order from a doctor b. drugs that can be purchased at a store without a prescription c.

Complete the reactions to show how butanoic acid may be converted to phenyl propyl ketone.

As a sample of the radioactive isotope 131I decays, its half-life (1) decreases (2) increases (3) remains the same

How many Joules of energy are required to change 10.0 gram of ice at - 2.0 C to water at 20.0 C? (use your constants) 440 J 66,000 J 880 4220 J

Why are Van der Waals forces important? A) They determine how strong dipole moments will be in polar covalent molecules B) They are the strongest type of intermolecular force that can act on polar and non-polar molecules C) They are primary

When heat is added to or removed from a substance, it may change its state. What state will most likely result if heat is added to a liquid?