Started? Worked? Either of these.
Answer:
5' side on top, broken arrow leading out, 3' side on the bottom, continuous arrow leading in
Explanation:
C = The new strand is built 5′ to 3′, and the Okazaki fragments form, moving away from the replication fork.
You're starting with
(12.0 mL) (0.550 M) = (0.0120 L) (0.550 M) = 0.00660 mol
of FeCl₃.
For every mole of FeCl₃ in the balanced reaction, you need 3 moles of NH₄OH, so you need a minimum 0.0198 mol NH₄OH per mole FeCl₃.
Then the requisite volume of NH₄OH solution needed is <em>V</em> such that
(0.0198 mol) / <em>V</em> = 0.200 M
Solve for <em>V</em> to get
<em>V</em> = (0.0198 mol) / (0.200 M) = 0.0990 L = 99 mL
