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Quiz1 - CHEM 40 — 001 QUIZ 1d(20 points Spring 2009...

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Unformatted text preview: CHEM 40 — 001 QUIZ 1d (20 points) Spring 2009 M.Pauly Name: it For all calculations, you must show all your work and use the correct number of significant figures to receive full credit. 7*: Place your final answers in the boxes provided. 1. For each measurement below, clearly underline the significant figures. (4 points) a) @Z'm b) 0.2550 feet c) §g0 g d) 230.0 mL (3) (a) (2) (a) 2. Using a calculator, perform the following calculations and report your answer with the appropriate number of significant figures. (4 points) a) (3.76 x 105)‘(0.7384) (3.61) (52.309) = T479063?) (.012 K [O b) 66.820g—55.61g = Halo \_.__1 2¢Qoe€ma403 Hle 3. Measure the object below in millimeters. (2 points) ' ' 4. What is the length of the object above (question 3) in centimeters? (2 points) . he 5. How many milliliters will 12.5 milligrams of ethanol W? The density of ethanol is 0.794 g/mL. (4 points) {000 an? e— I; z. ,m t (“L __M ‘ 9 j x 3 x —-—————~ : 0,0574% ML /000 m3 674%j 6. There are 18 grams of fat in an In—N—Out french fries. If 1 gram of fat is about 8900 calories, how many kilocalories are in one french fries? (4 points) [3454: 8400 (030 [DOOM/Q: (14w quocfl {W ___ '8 93V ; {(90.1 (Am/0 8 X (51%“ X )ooocwz IQO [LCM , ...
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