You are looking at a slide using your microscope and see many things moving about. You notice a very rigid structure outlining t
he cell. You like to have as many facts as possible to back up any claims you make, specially in science. What else would help you to be sure what type of cell you are seeing? Question 4 options:
Most cells have lysosomes, mitochondria and cell membrane. Hence these organelles cannot be used to differentiate cells. Chloroplasts, however, are only resent in photosynthetic cells such as plant cells and can be used as a distinguishing factor.
HA ⇄ H⁺ + A⁻ so: and now: = 1.5 x 10⁻⁵ x is considered very small compared to 0.15 x² = 2.25 x 10⁻⁶ x = 1.5 x 10⁻³ So [H⁺] = 1.5 x 10⁻³ pH = - log [H⁺] = - log (1.5 x 10⁻³) = 2.83
![\frac{[H^+][A^-]}{[HA]} = 1.5 x 10^{-5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%5BH%5E%2B%5D%5BA%5E-%5D%7D%7B%5BHA%5D%7D%20%3D%201.5%20x%2010%5E%7B-5%7D%20%20)
= 1.5 x 10⁻⁵