PORTAGE LEARNING CHEMISTRY 103 FINAL
EXAM STUDY
GUIDE COMPLETE TEST PREP WITH VERIFIED
QUESTIONS AND ANSWERS 2026/2027 LATEST
MODULES 1-6
MODULE 1 – EXAM
Question 4
pts
Be sure to show the correct number of
significant figures in each calculation.
1. Show the calculation of the density.
of benzene if 28.6 g occupies 32.7
ml
2. Show the calculation of the volume of 14.3
grams of acetone with density of 0.785 g/ml
Your Answer:
D=M/V
M=DXV
V=M/D
1.) Show the calculation of the density of
benzene if 28.6 g occupies 32.7 ml.
***significant figures are underlined***
D=M/V
, 28.6/32.7
= 0.875g/ml
3 sig/figs
2.) Show the calculation of the volume of
14.3 grams of acetone with density of 0.785
g/ml
V=M/D
14.3/0.785
= 18.2mL
3 sig/figs
1. D = M / V = 28..7 = 0.875
2. V = M / D = 14..785 = 18.2 ml
Question 5
pts
1. 1.35601 contains ? significant figures.
2. 0.151 contains ? significant figures.
3. 1.35601 + 0.151 = ? (give answer to correct number of significant figures)
Your Answer:
1.) 1.35601 = SIX significant figures
2.) 0.151 = THREE significant figures.
3.) 1.35601 + 0.151
=1.507
Question 1 – Section 1.1
pts
Complete the two problems below:
,1. Convert 1005.3 to exponential form and explain your answer.
2. Convert 4.87 x 10-6 to ordinary form and explain your answer.
Your Answer:
1.) Convert 1005.3 to exponential form and explain your answer:
All number values must be between 1-10. Because this value is greater than 1, the
exponent remains positive.
In order for this to happen, we have to move the decimal three places to the LEFT thus,
the exponential form of 1005.3 is: 1.0053 X 103
2.) Convert 4.87 x 10-6 to ordinary form and explain your answer.
All number values must be between 1-10. Because this value has a negative exponent,
the final answer will be less than 1.
In order for this to happen, we have to move the decimal six places to the LEFT thus:
0.00000487
Questi
on 2
pts
Complete the two problems below:
Using the following information, do the conversions shown below, showing all work:
1 ft = 12 1 pound = 1 gallon = 4
inches 16 oz quarts
, 1 ton =
1 mile = 5280 1 quart = 2
2000
feet pints
pounds
kilo (= 1000) milli (= centi (= deci
1/1000) 1/100) (=
1/10)
1. 3.6 pounds = ? oz
2. 2680 ml = ? liters Your Answer:
1.) 3.6 pounds = 57.6 oz
1lb = 16oz
3.6(16) / 1 =57.6 oz
2.) 2680 ml =
2.68 liters
New/Old
Liters/Milliliters
EXAM STUDY
GUIDE COMPLETE TEST PREP WITH VERIFIED
QUESTIONS AND ANSWERS 2026/2027 LATEST
MODULES 1-6
MODULE 1 – EXAM
Question 4
pts
Be sure to show the correct number of
significant figures in each calculation.
1. Show the calculation of the density.
of benzene if 28.6 g occupies 32.7
ml
2. Show the calculation of the volume of 14.3
grams of acetone with density of 0.785 g/ml
Your Answer:
D=M/V
M=DXV
V=M/D
1.) Show the calculation of the density of
benzene if 28.6 g occupies 32.7 ml.
***significant figures are underlined***
D=M/V
, 28.6/32.7
= 0.875g/ml
3 sig/figs
2.) Show the calculation of the volume of
14.3 grams of acetone with density of 0.785
g/ml
V=M/D
14.3/0.785
= 18.2mL
3 sig/figs
1. D = M / V = 28..7 = 0.875
2. V = M / D = 14..785 = 18.2 ml
Question 5
pts
1. 1.35601 contains ? significant figures.
2. 0.151 contains ? significant figures.
3. 1.35601 + 0.151 = ? (give answer to correct number of significant figures)
Your Answer:
1.) 1.35601 = SIX significant figures
2.) 0.151 = THREE significant figures.
3.) 1.35601 + 0.151
=1.507
Question 1 – Section 1.1
pts
Complete the two problems below:
,1. Convert 1005.3 to exponential form and explain your answer.
2. Convert 4.87 x 10-6 to ordinary form and explain your answer.
Your Answer:
1.) Convert 1005.3 to exponential form and explain your answer:
All number values must be between 1-10. Because this value is greater than 1, the
exponent remains positive.
In order for this to happen, we have to move the decimal three places to the LEFT thus,
the exponential form of 1005.3 is: 1.0053 X 103
2.) Convert 4.87 x 10-6 to ordinary form and explain your answer.
All number values must be between 1-10. Because this value has a negative exponent,
the final answer will be less than 1.
In order for this to happen, we have to move the decimal six places to the LEFT thus:
0.00000487
Questi
on 2
pts
Complete the two problems below:
Using the following information, do the conversions shown below, showing all work:
1 ft = 12 1 pound = 1 gallon = 4
inches 16 oz quarts
, 1 ton =
1 mile = 5280 1 quart = 2
2000
feet pints
pounds
kilo (= 1000) milli (= centi (= deci
1/1000) 1/100) (=
1/10)
1. 3.6 pounds = ? oz
2. 2680 ml = ? liters Your Answer:
1.) 3.6 pounds = 57.6 oz
1lb = 16oz
3.6(16) / 1 =57.6 oz
2.) 2680 ml =
2.68 liters
New/Old
Liters/Milliliters
