Review 2G - Scientific Notation, Sig. Figs. & Metric Conversions

Express this number in Scientific Notation 685,000,000,000

• 6.85 x 10^-11

• 6.85 x 10¹¹

• 68.5 x 10¹⁰

• 6.85 x 10⁹

Express this number in Scientific Notation 0.000000076

• 7.6 x 10⁹

• 7.6 x 10^-9

• 7.6 x 10^-8

• 7.6 x 10⁸

Express this quantity in regular notation 3.60 x 10⁵ s

• 360,000 s

• 0.0000360 s

• 36,000 s

• 3,600,0000 s

Express this quantity in regular notation 3.42 x 10^-7 ng

• 34,200,000 ng

• 0.0000342 ng

• 3,420,000,000 ng

• 0.000000342 ng

Identify the number of sig. figs. in 50,540

• 4

• 5

• 3

• 2

Which of the following answer choices has 4 sig. figs. ?

• 1,230

• 12.3

• 0.123

• 0.1230

Round this number to 4 sig. figs. 10,235.0 mg.

• 10,240.0 mg

• 10,240 mg

• 1,024 mg

• 10,230 mg

Round this number to 4 sig. figs. 0.0098641 cg.

• 0.010

• 0.0098640 cg

• 0.009864 cg

• 0.009865 cg

Calculate the following and round your answer to the correct number of sig. figs. 17.3 cm x 6.2 cm =

• 107.26 cm²

• 107.3 cm²

• 107 cm²

• 110 cm²

Calculate the following and round the answer to the correct number of sig. figs. 139.482 g ÷ 68.75 mL =

• 2.02882 g/mL

• 2.029 g/mL

• 2.02883 g/mL

• 2.028 g/mL