Astudent observes a blood sample with a compound microscope that has a 10x ocular month and a 40 x objective lens how much larger do the blood cells appear under the microscope

Man i dont know this answer

What’s the solution?

The answer is the third choice

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.