# EXSET_1 - Swieter CHM1040 Question Set #1 MATH REVIEW and...

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Swieter 1 CHM1040 Question Set #1 MATH REVIEW and SIGNIFICANT FIGURE QUESTIONS 1. Perform the indicated algebra: (For help see the appendices in your text.) a. a m × a n = b. a (m+3) ÷ a (2m+2) = c. a 0 = d. a -2 = e. Since a ¼ = 4 a , what does a 1/n = ? 2. How many significant figures are in each of the following? a. 9 baseballs b. 90 baseballs c. 9,000,000 baseballs d. 3 dozen ostrich eggs e. 0.1 cm f. 100.10 cm g . 1.01 in. h. 0.005 g i. 0.00500 g 3. Rewrite the values in problem 2 e-i in suitable scientific notation. 4. Do the indicated arithmetic paying strict attention to significant figures and units. a. 0.034 cm + 0.0340 cm b. 0.034 cm × 0.0340 cm c. 0.034 cm - 0.0340 cm d. 0.034 cm ÷ 0.034 cm e. 0.034 cm - 0.0034 cm 5. Perform the following calculations and report the answer to the proper number of significant figures (without the aid of a culator): cal a. 9.75 in + 0.326 in b. 1.025 sec - 0.09 sec c. (1.61 × 10 15 A) + (1.61 × 10 16 A) d. (5.6 × 10 -2 m) 2 e. 3 -3 5 g 10 x 3 x g 10 x 4 6. Perform the following SI conversions making proper use of unit conversion analysis: a. 971 mg = kg b. 82 s = ms c. 12.3 cm 2 = mm 2 d. 0.213 L = cm 3 e. 6.50 m -1 = cm -1 f. 7.61 kg/L = mg/mL 7. You are given 1000 equal sized gem stones with a total mass of exactly 3 g. These gems are valued at \$1000 per oz. (Note: 1.00 oz = 28.35 g) Answer the following using unit - factor analysis. a.

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## This note was uploaded on 12/11/2011 for the course CHM 1045 taught by Professor Staff during the Spring '10 term at Santa Fe College.

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EXSET_1 - Swieter CHM1040 Question Set #1 MATH REVIEW and...

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