Anyone has completed practical file of physics

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.