A bag contains 8 black marbles and 20 yellow marbles. you can reach into the bag and pull out a black marble . Then you reach into the bag and pull out another marble. What is the probability that the second marble is yellow?

20/27

Step-by-step explanation:

In the beginning there are 28 different possibilities but since one black marble is eliminated there are 27 possibilities now.

To calculate probability all you have to do is divide the number of desired possibilities (in this case, 20 since there are 20 yellow marbles) by the number of possibilities in total (in this case, 27 since there are 20 yellow marbles + 8-1 black marbles).

This results in the answer becoming 20/27

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 believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement