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Quiz1_form_b - CHEM 40 — 001 QUIZ 1c(20 points Spring...

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Unformatted text preview: CHEM 40 — 001 ' QUIZ 1c (20 points) Spring 2009 M.Pau[y Name: 7% For all calculations, you must show all your work and use the correct number of significant figures to receive full credit. ‘k Place your final answers in the boxes provided. 1. For each measurement below, clearly underline the significant figures. (4 points) a) 5.20 g b) EEOC mL 0) 0.00_2_§ m d) 592. feet (a) {17 C2) C3) 2. Using a calculator, perform the following calculations and report your answer with the appropriate number of Significant figures. (4 points) -5 ’ ,_ 5 *- g a) (2.76 x 10 ) (0.384) (13.61) = filo-247043 x10 (-0.25 X lO (2.309) = o. Doom—MW 1.3 0"! b) 82.822 g — 55.16 g = 2:]. (.192, 1...: 27. (ale 3 ,2 oily-34 Ms 3. Measure the object below in millimeters. 4. What is the length of the object abc'we (question 3) in centimeters? (2 points) 519.5 W1 1 CM ”2'95 cm X [0 MM ha 5. How many milliliters will 27.5 milligrams of ethanolm? The density of ethanol is 0.794 g/mL. (4 points) X l 0 O E C U‘‘ U‘l f r‘ (9.034% ML. 6. There are 36 grams of fat in an In—N—Out chocolate shake. If 1 gram of fat is about 8900 calories, how many kilocalories are in one chocolate shake? (4 points) {c5949 8900 Cd /000 Cd; New/Q Bug K W“) K E : 370.4 we {3% {0006M wk» ,7 [ 320 140.1 ...
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