An unknown element "x" can form a compound with the formula "x"br2. in which main group on the periodic table would element "x" be found?

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Volume is a measurement of how fast particles of a substance are moving