In which of the following covalent compounds is the cental atom obeying the octet rule CH4,H2S, CIF3

The minerals found in bones are deposited by living cells called

Is the flow of energy during vaporizing more like the flow during melting or during freezing

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