What is the exact mean or average number of crabs found per site? 

just add them however many crabs their are just add all of the totals together then divide your answer by two.

It's 5.45 since you add all of them and divide it by how many numbers there are so you get 5.45.. i think

Step-by-step explanation:

Hope this helped

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

cant open file sorry!

step-by-step explanation: