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Post-lab 2 - burgin(lcb626 Post-lab 2 anderson(53245 This...

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burgin (lcb626) – Post-lab 2 – anderson – (53245) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 4.0 points Using the Q-test, determine whether there is an outlier in the following data set: 38.741, 37.160, 39.540, 40.555, 37.842, 34.052, 38.000, and 38.452. Discard the outlier if there is one, and then calculate the average and standard deviation to the correct number of significant figures. How would you report your results? 1. 38.61286 ± 1.13684 2. 38 ± 1 3. 38.613 ± 1.137 4. 39 ± 1 002 (part 1 of 2) 2.0 points Barium chloride, BaCl 2 , is soluble in water but is not reactive towards 3.0 M nitric acid. Barium sulfate, BaSO 4 , is not soluble in wa- ter and does not react with 3.0 M nitric acid. Barium phosphate, Ba 3 (PO 4 ) 2 , is reactive to- wards 3.0 M nitric acid but is not soluble in water. a) Suppose you have a solid mixture of barium sulfate and barium phosphate. Which of the following schemes would recover barium sulfate as pure solid out of the mixture?
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