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Scoring guidelines and notes contain examples of the most common approaches seen in student responses. These guidelines can be applied to alternate approaches to ensure that these alternate approaches are scored appropriately.
H 2 NNH 2 ( aq ) + HCOOH( aq ) → H NNH +. 2 3 ( aq ) + HCOO. − ( aq ) 1 point. (ii) For the correct answer and a valid justification: Acidic. The Ka of H2NNH3 + is greater than the Kb of HCOO−, so the production of H3O+(aq) occurs to a greater extent than the production of OH−(aq).
Scoring guidelines and notes contain examples of the most common approaches seen in student responses. These guidelines can be applied to alternate approaches to ensure that these alternate approaches are scored appropriately.
Scoring note: A maximum of three points can be earned if there are any extraneous vectors. Example responses for part (a) 1 point. For correctly drawing and labeling all the forces on the cart on the flat surface. For correctly drawing and labeling the weight of the cart on the incline.
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A response must earn the first point in order to be eligible for the third point. If the response has earned the second point, then only the correct answer will earn the third point. Instructions for scoring a response that presents an integrand of ln x correct answer are shown in the “Global Special Case” after part (d). 4 3 x. 2x 3 and the.
AP Calculus Reader’s Reports. The 2020 AP Calculus Exam consisted of two free response questions, each with several parts, and was administered online. HERE.
