List 5 things that were made possible because of the use of microscope

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.

372 ml is the volume of aluminum, density is 2.70 g/ml what is the mass in grams

Is the genie in the bottle experiment a physical or chemical change/reaction?