Convert to standard notation 1.312 x 10[2]

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

Which of the following statements is true? a. most heat energy is easily recovered and used for useful actions. b. friction causes molecules to vibrate more slowly. burning air and gasoline in an c. engine changes chemical energy into mechanical energy. it is impossible to d. change mechanical energy into mechanical energy.

What can a drop of liquid mercury be described as?