CHEM-100 [Aronson] Quiz 1 (Summer 05)

CHEM-100 [Aronson] Quiz 1 (Summer 05) - Kettering...

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Unformatted text preview: Kettering University Prof. C. L. Aronso I 39,12, I. What is the volume in liters (L) of 12.84 g of benzene {CfiHfi‘ density (d)=0.88 giml)? a L [Ml Ll h: __ - ,H Whit CHEM 136-09 Principles of Chemistry Lab Quiz #1 Summer Term, 2005 Name: -\._t.'. . .ii. it? Note: Each Answer = I point. You coir-lire your crtl’crdamr. 31".. \_ " E7: inIIKURyjbnswer: volume: .- it‘liil L 2. A flask that weighs 345.80 g is filled with 225 ml. of carbon tetrachloride (note CC14, is carcinogenic). The weight of the flask and carbon tetrachloride is found to be ?04.450 3. From this information, calculate the density {:3} of carbon tetrachloride. at, l. . L‘ 3 L 46. .- r. Answer: 0'! CCM = '1 &l c gfml 3. If the chemical carbon tetrachloride ['CClq) is knowo to be carcinogenic (tie. a cancer causing reagent) [Circle the best answer]: A. would you expect this to show up on the MSDS for Georgi—th No B. What precautions might you take if asked to use this liquid in the laboratory? List of precautions: -. ' _'-._' . .. =1 5.” -. -_.' ' ‘ Duiifl J t-ft '\[.;i‘____ 4. ll" chloroform (CHCly) is merely a suspected carcinogen, would you probably handle this liquid any differently than you would handle CCU? (circle the correct answer) Yes (:13;- 5. Would you try to substitute CHCl; for CCL; wherever possible? (Yes. _ N0 (circle the correct answer} ( Larger ) 6. Is the density {:1} of [-130 (1) smaller or larger than H30 (3)? Smaller (circle the correct answer) 7. is this a common characteristic of most chemical cornpound®r‘ Yes (cfrcte the em-rectr answer) Prry‘esmr C. L Amman CHEM 136-09: Summer Term. 2005 Page 8. How many significant figures are in the following: (A) 68.45?20 2 (B) 0.089560] __p_ (C) 72.1103 (D) 0.235100 .4. (E)257,011_,010 9. Express each of the numbers from question #8 above in scientific notation form below. (C) W. llios we »I (D) Q 9 some - to (E) (90 cadollmt") '16; 10. Which type of glassware would you choose to transfer known volumes of solution between containers? (circle the correct ru-tsnrer) __--—'-—-________ f—"q Rx __/ “To deliver” (TD) 11. Which type of glassware would you choose to choose to prepare solutions of known concentration? (circle the correct answer") “To Contain” (TC) ..-r"'———-—-.. “To Contain” (TC) ,____—-—~~’ “To deliver” (TD) 12. To what do the letters in the acronym MSDS refer? 13. in what units is the solubility property usually expressed? Answer: C‘; '1 ‘i I‘- k.4 Professor C. L. Aronson CHEM 136-09: Sim:an Tami. 2005 14. We are going to find the solubility of KN03 in water today‘s experiment. What is the chemical name of the compound KNO]? ' -' Lif- An '1. Answer: Voila 3‘61 'r - Ml ‘--5~ ‘ 15. There are several places in today's laboratory procedure where you are asked [0 transfer water to a tared 10 mL Erlenmeyer flask. What does the word tared mean? Answer: l6. The advised experimental procedure to form a dilute aqueous acidic solution from a concentrated aqueous solution purchased from a chemical company is by simply addingr water to the concentrated acid (circle the correct answer). (a) ll‘Ue I Prrtfl'ssm‘ C L. Arrmsrm CHEM 136-09: Simmer Tenn. 2005 Page 3 ...
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CHEM-100 [Aronson] Quiz 1 (Summer 05) - Kettering...

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