C125Final_A111

C125Final_A111 - C125 LABORATORY FINAL PRINT NAME_ FORM...

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C125 L ABORATORY  F INAL P RINT  N AME ___________________________ FORM A111 F ALL , 2009 On the scantron sheet, enter and shade your last name, first and middle initials, and 10- digit University ID numbers. Sign your name on the upper left hand corner of your scantron sheet. Enter and shade A111 in the “COURSE” block. Shade your SECTION NUMBER in the “SPECIAL CODE” block. You exam will not be graded if above information is not correctly entered. c = 3.00 × 10 8 m/s h = 6.63 × 10 –34 J s Q = mc T = C T c = λν E= h ν A = ε bc    E = - R H 1 n 1 2 - 1 n 2 2 A = log 100 % T P Total = Σ P x s = ( x i - x ) 2 i = 1 i = n n - 1 1 inch = 2.54 cm 1 mL   1 cm 3 % error = literature - exp erimental literature x 100% PV = nRT R = 0.08206 L . atm/K . mol H rxn = Q cal + Q soln c SH(H 2 O) = 4.184 J/g .0 C c 1 V 1 = c 2 V 2 1 atm = 760 mmHg = 101,325 Pa % 100 exp % % x l theoretica erimental purity yield = = 1 cal = 4.184 J A CTIVITY S ERIES Li > K > Ba > Ca > Na > Mg > Al > Mn > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H 2 > Cu > Hg > Ag > Au Page 1 of 12
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Choose only one best answer in each of the following. Section 1: Back to Basics 1. Identify the glassware to the far right: A) graduated flask B) Erlenmeyer flask C) volumetric cylinder D) graduated cylinder E) none of the above 2. Which of the following light has the longest wavelength? A) Blue B) Orange C) Violet D) Red E) Yellow 3. Which of the following is acidic: A) vinegar B) battery acid C) ammonia D) sodium chloride E) both A) and B) 4. If a small amount of sulfuric acid is spilled near the reagent bottles in the hood, the best thing to do first would be A) ask your lab partner for advice B) ignore it, thereby avoiding possible embarrassment C) sprinkle sodium bicarbonate on the drops of acid D) wash the inside of the hood with water E) wipe up the spill with paper towels 5. Which of the following, in general, will increase the purity of compound in crystallization: A) Cool down the solution in ice bath to lower the solubility, and grow crystals fast. B) Concentrate the solution to cause rapid crystallization. C) Add organic solvent so that the crystals form quickly. D) Scratch the inside wall of beaker or flask to induce the formation of the crystals. E) Settle it down in the drawer and let the solution cool down slowly so that large crystals are formed slowly. 6. In coordination compound lab, a student experimentally determined the average % purity of his green crystals to be 91.74%. The standard deviation of the calculated % oxalate was + 2.55%. How should the % oxalate be reported with the correct number of significant figures? (% can be treated as a unit.) A) 91.74% B) 92% C) 91.74 + 2.55% D) 92 + 2% Page 2 of 12
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E) 92 + 3% 7. Read the graduated cylinder on the right considering the optimum choice of the uncertain digit. A)
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This note was uploaded on 05/05/2010 for the course BIO 101 taught by Professor Vaughan during the Spring '10 term at IUPUI.

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C125Final_A111 - C125 LABORATORY FINAL PRINT NAME_ FORM...

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