Week 1 Worksheet - Summary General Chemistry I PDF

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Week 1 Worksheet Section __________

Name ______________________________

1. For each of the following, solve the problem using the correct number of significant figures in your answer. Addition and Subtraction: a. 12,658 + 33.2 =

b. 35.00 + 24 + 321.411 =

c. 85.212 – 36.8416 =

d. 300.1 – 56.264 – 26.215449 = Multiplication and Division: a. 45 x 66 =

b. 54,348

c. 3,252

÷ 68 =

÷

224 =

d. 492 x 3,226 = Scientific Notation and Significant Figures: a. (9.15 x 1016)

÷ (3.5 x 109) =

b. (9.15 x 1016) + (3.5 x 109) =

Week 1 Worksheet c. (9.15 x 1016) – (3.5 x 109) =

d. (9.15 x 1016)

× (3.5 x 109) =

2. Write the answers to the following in Scientific Notation: a. 80.00 x 330.0 =

b. 112560

÷ 56.28 =

c. 50.0 x 200.0 =

d. 86 x 23 =

3. Your pharmacist friend calls you and needs help to convert the mass of a medicine from ounces to drams. There are 5.00 ounces of the medicine; what is the mass in drams? (1oz=15.75 drams)

4. Write the number of seconds in a day (86,400 s) in exponential notation.

5. A laser pulse is 0.15 ns long. Write this using exponential notation with units of s.

6. The mass of a car is about 1.4 Mg. Write this mass using exponential notation with units of g.

Week 1 Worksheet 7. The diameter of the Earth is about 12,800 km. Write the diameter of the Earth using units of Gm.

8. Michael Oher has a mass of 141 kg. What is his mass in lbs. (1.00 kg = 2.20 lbs)

9. Are you speeding if you are going 90 km/hr and the speed limit is 60 mi/hr? Explain. (1.0 mi = 1.6 km)

10. You are purchasing agent at a start-up biotechnology firm. If sucrose costs $1.20 per pound, and a bottle contains 2.00 kg, how much would you pay for a case of sucrose containing 12 bottles?...