CHEM 103 / Module 1 to 6 Exam & Answers : Portage Learning
MODULE 1 EXAM
Question 1
Click this link to access the Periodic Table. This may be helpful throughout the exam.
1. Convert 845.3 to exponential form and explain your answer.
2. Convert 3.21 x 10
-5 to ordinary form and explain your answer.
1. Convert 845.3 = larger than 1 = positive exponent, move decimal 2 places
= 8.453 x 102
2. Convert 3.21 x 10
-5 = negative exponent = smaller than 1, move decimal 5 places =
0.0000321
Question 2
Click this link to access the Periodic Table. This may be helpful throughout the exam.
Using the following information, do the conversions shown below, showing allwork:
1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts
1 mile = 5280 feet 1 ton = 2000 pounds 1 quart = 2 pints
kilo (= 1000)
1/100)
milli (= 1/1000)
deci (= 1/10)
centi (=
1. 24.6 grams = ? kg
2. 6.3 ft = ? inches
1. 24.6 grams x 1 kg / 1000 g = 0.0246 kg
2. 6.3 ft x 12 in / 1 ft = 75.6 inches
please always use the correct units in your final answer
2
Question
3
3
Click this link to access the Periodic Table. This may be helpful throughoutthe exam.
Do the conversions shown below, showing all work:
1. 28
oC = ?
oK
2. 158
oF = ?
oC 3.343
oK = ?
oF
1. 28
oC + 273 = 301
oK oC → oK (make larger)
+273
2. 158
oF - 32 ÷ 1.8 = 70
oC oF → oC (make smaller)
-32 ÷1.8
3. 343
oK - 273 = 70
oC x 1.8 + 32 = 158
oF
oK → oC → oF
Question 4
Click this link to access the Periodic Table. This may be helpful throughout the exam.
Be sure to show the correct number of significant figures in each calculation.