How many kilojoules are associated with the formation of 2 moles of hbr(g)?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

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.