Chemistry Chapter 1 Extra Problems

# Chemistry Chapter 1 Extra Problems - Chapter One Extra...

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Chapter One Extra Practice Problems 1. Write each of the following as an “ordinary” number. a. 5.082 x 10 -3 b. 9.740 x 10 4 c. 7.874 x 10 -2 d. 15.07 x 10 -2 2. Write each of the following numbers in standard scientific notation using three significant figures. 3. Perform the following calculations using your TI-30 in scientific notation mode. 4. How many significant figures are in each of the following measurements? 5. If 72.34 mL of a liquid has a mass of 86.3 kg, then what is the density of the liquid in g/mL? 6. The density of a give solid is 87.09 g/mL. What volume, in L, would 398.72 g of the substance occupy? 7. Perform the following unit conversions. a. 6.77 g to mg b. 1.56 x 10 -9 kg to mg c. 573000 mg to kg d. 6.783 kg to pounds (1 pound = 453.6 g) e. 2.785 oz to g (1 lb = 16 oz) f. 8.34 miles to km (1 mile = 5280 ft; 1 in = 2.54 cm)

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8. Perform the following unit conversions: a. 17.41 kg/m 3 to g/cm 3 b. 7.68 lb/gal to g/cm 3 (1 qt = 0.946 L; 1 kg = 2.205 lb)
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