Problem 1
What quantity (length, mass, volume, time) is expressed by the following units? (a) centimeter (b) gram (c) milliliter (d) second
Problem 2
What quantity (length, mass, volume, time) is expressed by the following units? (a) kilometer (b) microgram (c) liter (d) nanosecond
Problem 9
State the number of significant digits in each of the following: (a) \(0.05 \mathrm{~cm}\) (b) \(0.50 \mathrm{~cm}\) (c) \(25.0 \mathrm{~cm}\) (d) \(20.50 \mathrm{~cm}\)
Problem 10
State the number of signiticant digits in each of the following: (a) \(1.050 \times 10^{2} \mathrm{~cm}\) (b) \(2 \times 10^{3} \mathrm{~cm}\) (c) \(3.00 \times 10^{-4} \mathrm{~cm}\) (d) \(5.0 \times 10^{-5} \mathrm{~cm}\)
Problem 11
State the number of significant digits in each of the following: (a) \(5.0 \mathrm{~g}\) (b) \(5.05 \mathrm{~g}\) (c) \(0.5 \mathrm{~g}\) (d) \(1055 \mathrm{~g}\)
Problem 12
State the number of significant digits in each of the following: (a) \(1.2 \times 10^{0} g\) g (b) \(4.50 \times 10^{1} \mathrm{~g}\) (c) \(5.02 \times 10^{-1} \mathrm{~g}\) (d) \(100 \times 10^{-2} \mathrm{~g}\)
Problem 13
State the number of significant digits in each of the following: (a) \(0.5 \mathrm{~mL}\) (b) \(0.50 \mathrm{~mL}\) (c) \(5.00 \mathrm{~mL}\) (d) \(500 \mathrm{~mL}\)
Problem 14
State the number of significant digits in each of the following: (a) \(1 \times 10^{-1} \mathrm{~mL}\) (b) \(1.0 \times 10^{-2} \mathrm{~mL}\) (c) \(1.00 \times 10^{1} \mathrm{~mL}\) (d) \(1.000 \times 10^{3} \mathrm{~mL}\)
Problem 15
Round off the following to three significant digits: (a) 20.155 (b) 0.204500 (c) 2055 (d) 0.2065
Problem 16
Round off the following to three significant digits: (a) 10.25 (b) 10.20 (c) 0.01029 (d) 10,248
