01b_POST_lab-solutions

# 01b_POST_lab-solutions - organisms is in exponential...

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markowitz (am45362) – 01b POST – huq – (47985) 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 2.0 points What is the concentration oF H+ ions in a 50 mM solution oF Tris with a pH oF 8? 1. 10 E-8 mol/L CORRECT 2. 10 E-5 mol/kg 3. 10 E-8 mM 4. 0.05 M 5. 10 E-5 M Explanation: 002 2.0 points Which oF the groups oF solutions below most likely represents the result oF a serial dilution method? 1. 0.01 M; 0.03 M; 0.05 M; 0.07 M; 0.09 M 2. 5.0 M; 4.0 M; 3.0 M, 2.0 M; 1.0 M 3. 1.1 M; 1.2 M; 1.3 M; 1.4 M; 1.5 M 4. 1.0 M; 100 mM; 100 M; 1.0 M; 10 nM 5. 0.80 M; 0.40 M; 0.20 M; 0.10 M; 0.05 M CORRECT Explanation: 003 2.0 points The 95 1. the average value oF a set oF measure- ments. 2. how closely a set oF measured values comes to Falling on a straight line oF a linear graph. 3. None oF these answers 4. the probability that a population oF
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Unformatted text preview: organisms is in exponential growth. 5. How extensively a set oF measured values distributes away From the mean. CORRECT Explanation: 004 2.0 points ¡p¿In this lab you were told that the density oF the ”Dark Blue Solution” is 1.12 g/mL. What volume oF this solution would weighnbsp;280 mg?¡/p¿ 1. None oF these answers 2. 125 L 3. 250 L CORRECT 4. 50 mL 5. 50 L Explanation: ¡p¿¡span class=”pageTitle”¿¡strong¿¡span style=”color: 4579aa;”¿solution denisty¡/span¿¡/strong¿¡/span¿¡/p¿ 005 2.0 points ¡p¿The most accurate device to measure a 175.0 micro;L volume oF liquid is:¡/p¿ 1. P1000 automatic pipetter 2. 100-mL graduated cylinder 3. analytical balance 4. P200 automatic pipetter CORRECT 5. 10-mL graduated glass pipet Explanation: ¡p¿¡span class=”pageTitle”¿measure 175micro;L ¡/span¿¡/p¿...
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## This note was uploaded on 02/28/2012 for the course BIO 205L taught by Professor Hanson during the Fall '07 term at University of Texas.

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