How does kinetic energy transform into potential an then back again?

1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct