which of the following substances is an example of an acidic gas

ATI TEAS 7

ATI TEAS 7 science review

1. Which of the following substances is an example of an acidic gas?

A. Nitrogen (N₂)
B. Carbon dioxide (CO₂)
C. Sulfur dioxide (SO₂)
D. Oxygen (O₂)

Correct answer: C

Rationale: The correct answer is C, Sulfur dioxide (SO₂). Sulfur dioxide is an acidic gas because when dissolved in water, it forms sulfurous acid, which imparts acidic properties. Nitrogen (N₂), carbon dioxide (CO₂), and oxygen (O₂) are not considered acidic gases. Nitrogen is a neutral gas, carbon dioxide forms a weakly acidic solution when dissolved in water, and oxygen is a neutral gas.

2. During January, Dr. Lewis worked 20 shifts. During February, she worked three times as many shifts as she did during January. During March, she worked half the number of shifts she worked during February. Which equation below describes the number of shifts Dr. Lewis worked in March?

A. shifts = 20 + 3 + 1/2
B. shifts = (20)(3)(1/2)
C. shifts = (20)(3) + 1/2
D. shifts = 20 + (3)(1/2)

Correct answer: B

Rationale: During January, Dr. Lewis worked 20 shifts. Shifts for January = 20. During February, she worked three times as many shifts as she did during January. Shifts for February = (20)(3) = 60. During March, she worked half the number of shifts she worked in February. Shifts for March = (60)(1/2) = 30. Therefore, the correct equation to describe the number of shifts Dr. Lewis worked in March is 'shifts = (20)(3)(1/2)', representing the calculation based on the given scenario. Choices A, C, and D do not accurately represent the correct mathematical relationship between the shifts worked in the different months, making them incorrect.

3. What is the name of the sheath of connective tissue that surrounds a skeletal muscle?

A. Epimysium
B. Perimysium
C. Endomysium
D. Myofibril

Correct answer: A

Rationale: The correct answer is Epimysium. The epimysium is the outermost layer of connective tissue that surrounds a skeletal muscle, providing protection and support to the muscle as a whole. Perimysium, which surrounds bundles of muscle fibers known as fascicles, is not the sheath that surrounds the entire muscle. Endomysium surrounds individual muscle fibers, not the entire muscle. Myofibril is a structure within muscle fibers that contains the contractile proteins responsible for muscle contraction, but it is not the sheath of connective tissue surrounding the muscle.

4. Bob decides to go into business selling lemonade. He buys a wooden stand for $45 and sets it up outside his house. He figures that the cost of lemons, sugar, and paper cups for each glass of lemonade sold will be 10¢. Which of these expressions describes his cost for making g glasses of lemonade?

A. $45 + $0.1 × g
B. $44.90 × g
C. $44.90 × g + 10¢
D. $90

Correct answer: A

Rationale: The cost for making g glasses of lemonade includes the initial cost of the stand ($45) plus 10¢ for each glass of lemonade sold. Therefore, the expression that represents the cost for making g glasses of lemonade is $45 + $0.1 × g, which matches option A. Choice B, $44.90 × g, is incorrect as it does not account for the initial stand cost of $45. Choice C, $44.90 × g + 10¢, is incorrect because it does not include the initial stand cost and incorrectly adds an extra 10¢ for every glass. Choice D, $90, is incorrect as it does not consider the variable cost of 10¢ per glass and only represents the initial stand cost.

5. Anna is planning a trip to Bretagne, or Brittany, in the northwestern part of France. Since she knows very little about it, she is hoping to find information about hiking trails, beaches, restaurants, and accommodations. Which of the following guides will be the best for her to review?

A. The Top Ten Places to Visit in Brittany, published by a non-profit organization in Bretagne aiming to attract tourism to the region
B. Getting to Know Nantes: Eating, Staying, and Sightseeing in Brittany's Largest City, published by the French Ministry of Tourism
C. Hiking Through Bretagne: The Best Trails for Discovering Northwestern France, published by a company specializing in travel for those wanting to experience the outdoors
D. The Complete Guide to Brittany, published by a travel book company that provides guides for travel throughout Europe

Correct answer: C

Rationale: The best guide for Anna to review would be 'Hiking Through Bretagne: The Best Trails for Discovering Northwestern France,' published by a company specializing in travel for those wanting to experience the outdoors. Since Anna is interested in hiking and outdoor activities, a guide that focuses on outdoor trails in Northwestern France would be the most suitable choice. Choice A, 'The Top Ten Places to Visit in Brittany,' may not provide detailed information about hiking trails. Choice B, 'Getting to Know Nantes,' focuses on a specific city and may not cover the broader region of Bretagne. Choice D, 'The Complete Guide to Brittany,' although comprehensive, may not emphasize hiking trails and outdoor experiences as much as choice C.