An aluminum screw has a density of 2.7 g/ml and a volume of 15ml. what is the mass of the screw ?

Describe the function of the endomembrane system? what organelles are involved?

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Which statement best explains why the overall charge on an atom is zero?