Robert is boiling a pot of water to make spaghetti. Which of the following accurately describes the water molecules as the water changes from a liquid to a gas?

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.

The density of e85 fuel is 0.801 g/ml. what is the mass of 1.00 gallon of the fuel? (1 gal. = 3.785 l)