6. A family decided to take a trip to Europe. The plane they took flew at an average speed of 500 miles per hour during the flight. The plane covered a distance of 5,000 miles during the flight. How long was the flight?
Your answer

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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.