When a ball bounces, it has changing amounts of potential and kinetic energy. Eventually the ball will stop bouncing and come to rest. Which of the following best describes why the ball stops bouncing? The ball’s energy is transformed into chemical energy.

The ball’s energy gets transformed to heat and sound energy.

The mass of the ball is too small to allow the ball to continue its own motion.

The pull of gravity is stronger than the energy in the ball, which makes the ball stop bouncing.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *