Ch.3 Questions - Chapter 3 Questions 3.15) this is wrong...

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Chapter 3 Questions 3.15) this is wrong because 3 ft = 1 yd. No, because 1000 cm = 1 m 3.17) it should contain one significant number because it divides into 3, which has one significant number and the rule is that the answer should contain the same number of significant numbers as the number with the lowest significant numbers. 3.18) a. 1 cm = .01 m b. 1 km = 1000 m c. 1 m = .000000000001 pm d. 1 dm = ? m e. 1 g = .001 kg f. 1 cg = ? g 3.25) -96˚F to ˚C? F = (9/5)C + 32 So. . -96 = (9/5)C + 32 … ANSWER = -71.11 3.28) 4 Kelvin to Celcius? K=C +273.15 4=C +273.15 ANSWER = -269 3.32) a. 37.53 = 4 sigs b. 37.240 = 5 sigs c. 202.0 = 4 sigs d. 0.00024 = 2 sigs e. 0.07080 = 4 sigs f. 2400 = 2 sigs 3.33) a. 0.0230 = 3 sigs b. 105.303 = 6 sigs c. 0.007 = 1 sig d. 614.00 = 5 sigs e. 10 = 1 sig f. 3.8105 = 5 sigs 3.36) a- 0.0023 x 315 = .72 45 = 72 ANSWER HAS TO HAVE THE LOWERST NUMB OF SIGS IN PROBLEM b- 84.25 – 0.01075 = 84.23 925 = 84.24 ANSWER HAS TO HAVE THE SAME NUMBER OF DECIMAL PLACES AS THE LOWEST IN PROBLEM
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This note was uploaded on 07/05/2008 for the course CHEM 1311 taught by Professor Sibert during the Fall '08 term at University of Texas at Dallas, Richardson.

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Ch.3 Questions - Chapter 3 Questions 3.15) this is wrong...

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