Answer:
D. 6.3 x 10-5 mol/L NaOH
Explanation:
Alizarin yellow is an indicator that is yellow when pH < 10.1. In the same way, thymol blue is blue when pH > 9
That means the pH of the solution is between 9 - 10.1
Any acid as HCl could have a pH of these.
The solution of 3.2x10⁻⁴M NaOH has a pH of:
pOH = -log[OH-] = 3.49
pH = 14-pOH = 10.51. The pH of the solution is not 10.5
Now, the solution of 6.3x10⁻⁵M NaOH has a pH:
pOH = -log[OH-] = 4.2
pH = 14-pOH = 9.8
The pH of the solution could be 9.8. Right option is:
<h3>D. 6.3 x 10-5 mol/L NaOH</h3>
Answer:
1s^2..2s^2..2p^6..3s^1
Explanation:
Since sodium has 11 electrons...its electron configuration is...;
1s^2..2s^2..2p^6..3s^1
;The powers of the energy levels(i.e s,p,d) should all add up to the number of electrons in an atom
*.When writing...please do not separate them.
False, Dietary proteins are first broken down to individual amino acids by various enzymes and hydrochloric acid
present in the gastro-intestinal tract. These amino acids are further
broken down to α-keto acids which can be recycled in the body for
generation of energy, and production of glucose or fat or other amino
acids.
