Magnesium is an alkaline earth metal with an atomic number of 12. it’s in the third row in the periodic table. which expression shows one way to find the number of valence electrons in one atom of magnesium? a. 12x3 b. 12/3 c. (12-8)-2 d. (12-2)+8 or e. (12+2)-8

If you put a helium-filled balloon in the refrigerator, what will happen?

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?