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Unformatted text preview: 1 liter (L) = 1000 milliliters (mL) = 1000 cm 3 D = mass/volume mass = 1.5 x 10 6 g The final answer should have 2SF (since the start value 1500 has 2SF) 5. (1 pt) Keeping in mind the rules for rounding, significant digits and scientific notation, what is 0.0025 111.09? a) 0.28 correct b) 0.27 c) 0.278 d) 0.3 Explanation: 0.0025 (2 sig figs) 111.09 (5 sig figs) =0.28 (2 significant figures which is the smallest number per the rule for multiplication). 6. (3pts) The density of diamond is 3.51 g/cm 3 . The international (but nonSI) unit for weighing diamonds is the carat (1 carat = 200 mg exactly.) What is volume of a 0.82 carat diamond? density = 3.51 g/cm 3 m = 0.82 carat d =m/V V =m/density = (0.82 carat/3.51 g/cm 3 ) x(200 mg/carat ) (1 g 1000 mg) = 0.0467236 cm 3 Correct answer: 0.047 cm 3 ....
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 Spring '08
 PETERPASTOS
 Chemistry

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