CHEM 104 PORTAGE LEARNING FINAL EXAM QUESTIONS
AND CORRECT ANSWERS |LATEST VERSION 2025/2026
ALREADY GRADED A+
RATED
MULTIPLE CHOICES
QUESTION 1) Significant figures are important because they indicate
A) the number of measurements.
B) the number of digits on a calculator.
C) the accuracy of the conversion factor.
D) the exact numbers in a measurement.
E) the certain and estimated digits in a measurement. - Correct Ans ✓✓ E) the certain and estimated digits in a
measurement.
QUESTION 2) The number of significant figures in the measurement of 45.030 mm is
A) none.
B) three.
C) four.
D) five.
E) six. - Correct Ans ✓✓ D) five.
QUESTION 3) Which of the following examples illustrates a number that is correctly rounded to three
significant figures?
A) 20.0332 grams to 20.0 grams
B) 4.05438 grams to 4.054 grams
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,C) 103.692 grams to 103.7 grams
D) 109,526 grams to 109 500 grams
E) 0.03954 grams to 0.040 grams - Correct Ans ✓✓ A) 20.0332 grams to 20.0 grams
QUESTION 4) What is the correct answer for the calculation of a volume (in mL) with measured numbers?
28.58/16x8.02
A) 0.22 mL
B) 14 mL
C) 0.223 mL
D) 14.3 mL
E) 57 mL - Correct Ans ✓✓ A) 0.22 mL
QUESTION 5) The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is A) 10 g.
B) 13 g.
C) 13.0 g.
D) 13.071 g.
E) 13.1 g. - Correct Ans ✓✓ B) 13 g.
QUESTION 6) Which of the following measurements are NOT equivalent?
A) 183 L = 0.183 kL
B) 24 dL = 2.4 L
C) 84 cm = 8.4 mm
D) 25 mg = 0.025 g
E) 150. ms = 0.150 s - Correct Ans ✓✓ C) 84 cm = 8.4 mm
QUESTION 7) Which of the following is the largest unit?
A) millimeter
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,B) kilometer
C) micrometer
D) decimeter
E) meter - Correct Ans ✓✓ B) kilometer
QUESTION 8) How many kilograms are in 30.4 lb? 1 kg = 2.20 lb
A) 66.88 kg
B) 66.9 kg
C) 13.8 kg
D) 67 kg
E) 14 kg - Correct Ans ✓✓ C) 13.8 kg
QUESTION 9) A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL.
How many milliliters of the suspension are required?
A) 6.3 mL
B) 0.0063 mL
C) 0.0025 mL
D) 3.0 mL
E) 2.5 mL - Correct Ans ✓✓ E) 2.5 mL
QUESTION 10) A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a
volume of 77.0 mL. What is the density of the gold?
A) 10.4 g/mL
B) 0.0518 g/mL
C) 19.3 g/mL
D) 1.00 g/mL
E) 6.77 g/mL - Correct Ans ✓✓ C) 19.3 g/mL
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, QUESTION 11) A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid?
A) 1.33 g/mL
B) 1.00 g/mL
C) 1330 g/mL
D) 0.663 g/mL
E) 0.752 g/mL - Correct Ans ✓✓ A) 1.33 g/mL
QUESTION 12) What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?
A) 42 g
B) 67.1 g
C) 53 g
D) 41.9 g
E) 67 g - Correct Ans ✓✓ A) 42 g
QUESTION 13) Blood is a(n)
A) compound.
B) heterogeneous mixture.
C) element.
D) homogeneous mixture. - Correct Ans ✓✓ D) homogeneous mixture
QUESTION 14) Which of the following is an example of a physical change?
A) converting water to hydrogen and oxygen
B) grinding coffee beans
C) digesting a cheeseburger
D) burning coal
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AND CORRECT ANSWERS |LATEST VERSION 2025/2026
ALREADY GRADED A+
RATED
MULTIPLE CHOICES
QUESTION 1) Significant figures are important because they indicate
A) the number of measurements.
B) the number of digits on a calculator.
C) the accuracy of the conversion factor.
D) the exact numbers in a measurement.
E) the certain and estimated digits in a measurement. - Correct Ans ✓✓ E) the certain and estimated digits in a
measurement.
QUESTION 2) The number of significant figures in the measurement of 45.030 mm is
A) none.
B) three.
C) four.
D) five.
E) six. - Correct Ans ✓✓ D) five.
QUESTION 3) Which of the following examples illustrates a number that is correctly rounded to three
significant figures?
A) 20.0332 grams to 20.0 grams
B) 4.05438 grams to 4.054 grams
1|Page
,C) 103.692 grams to 103.7 grams
D) 109,526 grams to 109 500 grams
E) 0.03954 grams to 0.040 grams - Correct Ans ✓✓ A) 20.0332 grams to 20.0 grams
QUESTION 4) What is the correct answer for the calculation of a volume (in mL) with measured numbers?
28.58/16x8.02
A) 0.22 mL
B) 14 mL
C) 0.223 mL
D) 14.3 mL
E) 57 mL - Correct Ans ✓✓ A) 0.22 mL
QUESTION 5) The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is A) 10 g.
B) 13 g.
C) 13.0 g.
D) 13.071 g.
E) 13.1 g. - Correct Ans ✓✓ B) 13 g.
QUESTION 6) Which of the following measurements are NOT equivalent?
A) 183 L = 0.183 kL
B) 24 dL = 2.4 L
C) 84 cm = 8.4 mm
D) 25 mg = 0.025 g
E) 150. ms = 0.150 s - Correct Ans ✓✓ C) 84 cm = 8.4 mm
QUESTION 7) Which of the following is the largest unit?
A) millimeter
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,B) kilometer
C) micrometer
D) decimeter
E) meter - Correct Ans ✓✓ B) kilometer
QUESTION 8) How many kilograms are in 30.4 lb? 1 kg = 2.20 lb
A) 66.88 kg
B) 66.9 kg
C) 13.8 kg
D) 67 kg
E) 14 kg - Correct Ans ✓✓ C) 13.8 kg
QUESTION 9) A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL.
How many milliliters of the suspension are required?
A) 6.3 mL
B) 0.0063 mL
C) 0.0025 mL
D) 3.0 mL
E) 2.5 mL - Correct Ans ✓✓ E) 2.5 mL
QUESTION 10) A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a
volume of 77.0 mL. What is the density of the gold?
A) 10.4 g/mL
B) 0.0518 g/mL
C) 19.3 g/mL
D) 1.00 g/mL
E) 6.77 g/mL - Correct Ans ✓✓ C) 19.3 g/mL
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, QUESTION 11) A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid?
A) 1.33 g/mL
B) 1.00 g/mL
C) 1330 g/mL
D) 0.663 g/mL
E) 0.752 g/mL - Correct Ans ✓✓ A) 1.33 g/mL
QUESTION 12) What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?
A) 42 g
B) 67.1 g
C) 53 g
D) 41.9 g
E) 67 g - Correct Ans ✓✓ A) 42 g
QUESTION 13) Blood is a(n)
A) compound.
B) heterogeneous mixture.
C) element.
D) homogeneous mixture. - Correct Ans ✓✓ D) homogeneous mixture
QUESTION 14) Which of the following is an example of a physical change?
A) converting water to hydrogen and oxygen
B) grinding coffee beans
C) digesting a cheeseburger
D) burning coal
4|Page
