Answer:
We need to add 900 mL of water.
Explanation:
To know the amount of water to add first we need to calculate the concentration of KOH when the pH is 12 and when is 11:
When pH = 12 (initial):
When pH = 11 (final):
Now, by using the following equation we can find the volume of the solution to achieve a pH = 11:
Finally, to bring 100 mL of the initial solution to 1000 mL we need to add the following amount of water:
Therefore, we need to add 900 mL of water.
I hope it helps you!
Answer:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object. The energy is stored until the force is removed and the object springs back to its original shape, doing work in the process. The deformation could involve compressing, stretching, or twisting the object.
Magnesium is a metal in group 2 of the periodic table in period three with a valency of 2 and reacts by loosing electrons. Magnesium cannot react with Aluminium because both of them are metals and react by loosing electrons thus no bond would be formed between them. Neon is a noble gas with an octet configuration thus will not react with magnesium. However, Magnesium will react with chlorine which is a non metal and reacts by gaining an electron thus forming an ionic bond.
<h3>Changes with the independent variable...</h3>