The VSEPR model is used mainly to do what

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

An observation that requires measurement is called quantitative observable or qualitative

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.