To produce the same energy, it takes 1.6 times more coal (by volume) than oil. how many gallons of oil will give you the same amount of energy as 450 pounds of coal. assume that 1 pound of coal has a volume of 0.14 gallons.

The correct answer is c

They cool it down and aluminum cools easily

The answer is 5 10 15

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.