Asap unit test 14.14 the invention of the microscope make it possible for scientist to do? a) coffee genetic material b) examined and describe cells c) create new types of cells d) developing the chemicals

Iknow the answer is a but i don't know why

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

How can parts of a solution be separated by chromatography?