Hey there!
Here is your answer:
<u><em>The proper answer to this question is option D "sec-butyl bromide".</em></u>Reason:
<u><em>S</em></u><span><u><em>ec-butyl bromide looks often like this:</em></u>
<em>Therefore the answer is option D!</em>If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit</span>
By using the following formula we can calculate the volume;
C₁V₁ = C₂V₂
C₁ = concentration of starting solution = 0.098m
V₁ = volume of starting solution that is needed for titration = 20.01ml
C₂ = Desired concentration of final solution = ?
V₂ = desired volume of final solution = 0.215g = 0.215ml
Now putting the values in the formula;
0.098 x 20.01 = C₂ x 0.215
C₂ = 0.215 / 1.96098 = 0.109m = 0.11m
Thus, the answer is 0.11m.
6-(2+4)
6-6
=0 Formal charge of O atoms a and b is 0
6-(1+6)
6-7
= -1 Formal charge for O atoms c is -1
Answer 0,0,-1