P-Nitrophenol (shown above) is an acid-base indicator that turns yellow when the pH is above 7.5. What is the concentration of hydroxide ions if the pH is 9.27? Your answer should be rounded to 2 places behind the decimal and written in scientific notation. Do not include units.
Scientific notation example: 6.022 1023 should be typed as 6.022*10^23

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.