Air particles flow from areas of __.(Mark the one best answer.) A high pressure to low pressure, until the pressures are equal.

B. low pressure to high pressure, until the pressures are equal.

C. medium pressure to high pressure, until the pressures are equal.

D. low pressure to medium pressure, until the pressures are equal.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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