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

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

Compare and contrast the bohr model and the electron cloud models of the atom.

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.