Machine, the entire nail, plus the nail matrix and When a factory worker caught his finger in a
bed, was torn off. Will his nail grow back? Why or
why not?

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

C3h8o3 - glycerol major species present when dissolved in water

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?