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Scoring Scheme: 3-3-2-1
Question 3a)
The precipitate from Question 2 that possibly contains Mn or Co is treated with 1 mL of 6 M HNO3 followed immediately by the drop-wise addition of 3% hydrogen peroxide until the precipitate fully dissolves. The test tube is then heated in a water bath until bubbling ceases.
At this stage of the experiment, which elements could be found in the resulting LIQUID? Select all that apply.

a. Mn
b. Co
c. None

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