ANS_EX_1

# ANS_EX_1 - Swieter p 1 of 3 CHM1040 Answer to Exercise Set...

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Swieter; p 1 of 3 C:\Documents and Settings\BJT1150\Local Settings\Temporary Internet Files\OLK3CC\Ans_Ex#1.doc CHM1040 Answer to Exercise Set 1 MATH REVIEW and SIGNIFICANT FIGURE 1. a. a (m+n) b. a (1-m) c. 1; for all "a"except a = 0 d. 1/a 2 e. n a 2. a. counted number b. counted number c. counted number d. counted number e. one f. five g. three h. one i. three 3. e. 1 x 10 -1 cm f. 1.0010 x 10 2 cm g. 1.01 in h. 5 x 10 -3 g i. 5.00 x 10 -3 g 4. a. 0.068 cm b. 0.0012 cm 2 c. 0.000 cm d. 1.0 e. 0.031 cm 5. a. 10.08 in b. 0.94 sec c. 1.77 x 10 16 A d. 3.1 x 10 -3 m 2 e. 1 x 10 1 g 2/3 6. a. 9.71 x 10 -4 kg b. 8.2 x 10 4 ms c. 1.23 x 10 3 mm 2 d. 213 cm 3 e. 0.0650 cm -1 f. 7.61 x 10 3 mg/mL 7. a. \$5.28 = stones 50 x stones 1000 (exactly) g 3 x g 28.4 oz 1.00 x oz \$1000 = lost money b. g 1.00 \$35.21 = g 28.4 \$1000 : worth are stones The Thus with a digital balance (as used in lab) the stones are weighed to the nearest 0.001 g and this value is multiplied by \$35.21/g. This will give the value to within \$0.035 or 3.5 cents. c. Assuming each stone weighs the same: /stone \$0.1056 = stones 1000 (exactly) g 3 x g 28.4 oz 1.00 x oz \$1000 = stone each of value the So count the stones and multiply by \$0.1056/stone and round off to the nearest penny. 8. inch \$0.064 = inch 20 \$0. = ) inch (5.0 \$5.00 = costs pizza Small 2 2 0 2 π π inch \$0.065 = inch 20 \$0.

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• Spring '10
• Staff
• b. endothermic, Settings\BJT1150\Local Settings\Temporary Internet, Settings\Temporary Internet Files\OLK3CC\Ans_Ex

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