Answer:
pOH = -log[OH-]
Explanation:
Hello,
To calculate the pH or pOH of a substance, we relate it the negative logarithm of either the H+ or OH- concentration.
pOH is used to find the alkalinity of a solution my measuring the concentration of the hydroxide ion [OH-]. Solutions having a pOH value that is greater than 7 are said to be acidic while solutions with value less than 7 are alkaline.
pH = -log[H+]
While
pOH = -log[OH-]
Note: the pOH value of a solution depends on the concentration of the hydroxide ion in the solution.
Molality is obtained by dividing the number of moles of solute by the mass in kilogram of the solvent. None of the dimensions is dependent in temperature. On the other hand, molarity is obtained by dividing the number of moles of solute by the volume in liters of the solution. Volume is temperature dependent.
Answer:
All three vehicles have the same kinetic energy because they have equal speed.
What do you need help with?!
Answer: The correct answer is -C) Prevent the embryo from drying out.
The amniotic egg of birds and reptiles is surrounded by an outer, tough, and protective shell, which protects the egg from any damage, predators, pathogens, and drying out.
The tough shell and extra embryonic membranes create a safe environment where an embryo can develop into a whole organism (with different organs like eyes ,ears, brain, kidney, heart).
Thus, option C) is the right answer.