What is the chemical formula of lead(iv)oxide

How much energy moves onto the next level, in an energy pyramid

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.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid