Plants and animals need to protect themselves to survive. Select the statement that best describes the adaptions of animals and plants.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j