Which term best matches a potential energy diagram in which the potential energy value of the reactants is less than that of the products

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

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.

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?