a) Which of the following is closest to the diameter of an atom in size?The radius of a nucleus. The width of a grain of sand. The length of a chemical bond. The diameter of a nanoparticle.​

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

your answer would be “dry”

the dissolution of polymer can be thermodynamically described in 2 steps.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.