Train a and train b are leaving the station running on parallel tracks. train a is scheduled to leave at 12: 28 and train b is scheduled to leave 42 minutes later. train a is scheduled to travel an average of 45 miles per hour and train b is scheduled to travel 55 miles per hour. when will train b catch train a? how far down the track?

At 16:19

173.25 miles

Step-by-step explanation:

Train A:

Rate = 45 mph

Time = t hours

Distance traveled miles

Train B:

Rate = 55 mph

Time hours

Distance traveled miles

The distances traveled are the same, so

Note that 3.85 hours is 3 hours 51 minutes. Then the train B will catch the train A at 16:19.

Each train will travel miles

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.