hey guys, i need some help on this question, plz, if you don't know the answer it;s ok but if u do plz help me. I will be giving 10 pts. :) thank you very much!

Angle mno is s rotated 180 degrees counterclockwise about the origin to form angle m’n’o’. which statement shows the measure of angle m’n’o’?

Which of the following is the shape of a cross section of the figure shown below

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?