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EMA_4314_HW1_Solns - EMA 4314 HW 1 Solutions 1 Answers will...

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EMA 4314 HW 1 Solutions 1. Answers will vary a. Width of human hair b. Ant c. Fingernail d. Finger e. Height of child f. Olympic platform diving height g. Tall building h. Mount Everest 2. Answers will vary a. Grain of sand b. Teaspoon c. Quart of milk d. Box for shipping e. Swimming pool f. Large building g. Lake 3. PV = nRT 𝑉 = 𝑛𝑅𝑇 𝑃 = (1 𝑚𝑜𝑙 ) 8.20574 × 10 −2 𝑑𝑚 3 ∗ 𝑎𝑡𝑚 𝑚𝑜𝑙 ∗ 𝐾 (273.15 𝐾 ) 1 𝑎𝑡𝑚 = 22.414 𝑑𝑚 3 𝑎 . 1 dm 3 = 1 L; 22.414 L 𝑏 . 1 L = 0.264 gal; 5.92 gal 4. Answers will vary a. Plant seeds b. Coin c. Mouse d. Banana e. Cake f. Liter of water g. TV h. Football player i. Car 5. Answers will vary a. Tensile test b. Snail c. Small bug d. Walking e. Olympic sprinter f. Race car g. Mach 3 jet h. Light in vacuum 6. Answers will vary a. Laboratory vacuum
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b. Dollar on table surface c. Partially inflated bike tire d. Pressure of Earth’s atmosphere at sea level e. Core of Earth 7. a. 760 torr b. 760 mm of Hg c. 10332.27 mm of H 2 O ( 4 ̊ C) d. 101325 e. 14.696 psi 8. Answers will vary a. Frenkel pair recombination b. 1 cycle of 1 GHz processor c. 1 cycle of 1 MHz processor d. Phosphorescence e. Finger snapping f. Blink of eye g. Jump h. Make a joke i. Put on shoes j. Eat lunch k. Day l. Week m. Month 9. Assume you can count 1 number per second a. 11.6 days b. 31.7 years 10. K ̊ C ̊ F A 0 -273.15 -459.67 B 77 -196 -320 C 195 -78 -108 D 273 0 32 E 296 23 73 F 310 37 98.6 G 373 100 212 H 1265 (Iron) 1538 2800 I 3137 (Tungsten) 3410 6170 J 5778 5505 9941 11. a. 1.14×10 -3 g/cm 3 Oxygen b. 1 g/cm 3 Water c. 7.78 g/cm 3 Iron 12. (12 𝑜𝑧 𝑤𝑎𝑡𝑒𝑟 ) × ( 28 . 35 𝑔 ) 1 𝑜𝑧 × 1 18 𝑔 𝑚𝑜𝑙 = 18.6 𝑚𝑜𝑙 𝑜𝑓 𝑤𝑎𝑡𝑒𝑟 13. Use sucrose (C 12 H 22 O 11 ); 342 g/mol; density = 1.587 g/cm 3
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