To draw a Lewis structure for a covalent compound, begin by calculating A, the available electrons, and N, the needed electrons. What is A for silicon tetrachloride, SiCl4

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine