A 0.1 M solution of a weak acid is titrated with 0.1 M NaOH. After 10 mL has been added, the pH of the solution is 3.9. What is the Ka of the acid? What is the pH when 15 mL has been added, 20 mL has been added, 25 mL has been added? Draw a titration curve that fits this information. If necessary add additional points.

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

the increase of protons   hope this

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?