1-11, choose the correct letter.
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1. For y
-ax²
upward?
- 8x + 4, which value of a produces a parabola that opens
Solve for a

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

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