Electrophilic bromination of 3-phenylpropanenitrile occurs preferentially at the ortho and para positions. Assuming substitution at the ortho position, draw the structure of the most important resonance contributor of the carbocation intermediate.

Can someone me with questions 12 and 13 plz.

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.