Which best describes how magnesium and oxygen bond?
a. they form an ionic bond by exchanging two electrons.
b. they form an ionic bond by exchanging three electrons.
c. they form a covalent bond by sharing one electron.
d. they form a covalent bond by sharing four electrons.
will mark brainliest!

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?