Select the correct answer. Erin gets her exercise by running. The graph shows the distances she covers in a given amount of time. How many hours does it take for Erin to run 25 miles?

A.

2 hours

B.

2 1/4 hours

C.

2 1/2 hours

D.

2 3/4 hours

C

you go to 25 miles that's halfway between 20 and 30 miles then move your pointer to the right until you touch the graph then move down it should touch half way between 2 and three and that's 2 and a half

hreryryrranswer:

step-by-step explanation:

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.