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HW 9-23-08

# HW 9-23-08 - g 548.6 mL = cm³ a 0.0105 kg b 1 570 m c...

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Joseph Leonard Green P42 section 2 review #1-5 9/23/08 1. Why are standards needed for measured quantities? To assure that all units are universal throughout all scientists in the world. 2. Label each of the following measurements by the quantity each represents. For instance, a measurement of 10.6 kg/m³ represents density. a. 5.0 g/mL f. 325 ms b. 37 s g. 500 m² c. 47 J h. 30.23 mL d. 39.56 g i. 2.7 mg e. 25.3 cm³ j. 0.005 L a. density f. time b. time g. area c. energy h. volume d. mass i. mass e. volume j. volume 3. Complete the following conversions. a. 10.5 g = ____ kg b. 1.57 km = ___ m c. 3.54 µg = ___ g d. 3.5 mol = ___µmol e. 1.2 L = ___ mL f. 358 cm ³ = ___ m³

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Unformatted text preview: g. 548.6 mL = ___ cm³ a. 0.0105 kg b. 1 570 m c. 0.000 003 54 g d. 3 500 000 µmol e. 1 200 mL f. 3.58 m³ g. 548.6 cm³ 4. Write conversion factors to represent the following equalities. a. 1 m³ = 1 000 000 cm³ b. 1 in. = 2.54 cm c. 1 µg = 0.000 001 g d. 1 Mm = 1 000 000 m a.___1m³___ 1 000 000 cm³ b. _1 in._ 2.54 cm c. ___1µg ___ 0.000 001 g d. ___1 Mm___ 1 000 000 m 5. a) What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6 cm³? 1.7 g/cm³ b) What volume would be occupied by 75.5 g of this same substance? 44.2 cm³...
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HW 9-23-08 - g 548.6 mL = cm³ a 0.0105 kg b 1 570 m c...

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