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Test 1 - Chem 212 WINONA STATE UNIVERSITY Test#1 50 Marks...

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Chem. 212 WINONA STATE UNIVERSITY Sep. 29, 2006 (01/02/03) Test #1 - 50 Marks Dr. Ng Name ____________________________________Signature_______________________________ BOX# ______ ( L A S T , F I R S T ) General Instructions: Follow rules of significant figures whenever appropriate and show your work for full credits. Box final answer(s) with appropriate unit(s). PART A: Warm-up Questions. ( 11 marks ) 1. Give the balanced chemical equation (with appropriate phase notation for each species) for the following reaction at room temperature and pressure: iron metal reacts with molecular oxygen to give ferric oxide (rust). [6] 2. Perform the following conversion and express the answer in conventional scientific notation. 10.0 m s to ? cm ks -2 -2 [5] PART B: Multiple Choice Questions ( 10 x 2 each = 20 marks ). Circle the LETTER corresponding to the ONE correct answer. Circle only one . [20] 1. How many significant figures are present in the physical quantity : 0.060740x10 Mg ? 4 (a) 4 (b) 5 (c) 6 (d) 7 (e) none of these
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