What is the value of the expression?? PLEASE HELP

18

Step-by-step explanation:

= -4 x (-5) - 2

= 20 - 2

= 18

18

Step-by-step explanation:

-4x - 2

-4 (-5) - 2

(20)  - 2

   18

step-by-step explanation:

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.