What type of soil is best for growing plants?

Which of the following units is not an official si unit? mole liter kilogram ampere

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction