Which activity is most likely to produce heat from friction? A ) Opening a window

B ) Turning on a water faucet.

C ) Putting a pot of water on a hot plate.

D ) Rubbing an eraser back and forth over a piece of paper.

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.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

Which statement best describes what happens when molecular compounds melt