02 Question 3 (2 points)
Find the estimate
At a certain university. It costs a student $689 per credit hour to attend. Estimate
the cost for a student to attend one semester if he registers for 9 credit hours.

About $6000  

Step-by-step explanation:

Multiply 689 × 9.

When you are estimating, you should round the numbers off to values that you can easily work in your head.

I would round 9 up to 10 and 689 down to 600 to compensate. Then,

10 credit hours × $600/credit hour ≈ $6000.

It should cost about $6000 to register for 9 credit hours.

answer: the answer is 23

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.