A pile of sand has a weight of 90kg

Step-by-step explanation:

Small bag has 2 parts which is 7.5kg*2=15kg

Medium bag has 3 parts which is 7.5kg*3=22.5kg

Large bag has 7 parts which is 7.5kg*7=52.5kg

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.

i think c. but don't trust it.

step-by-step explanation: