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15 May, 09:01

Problem 1: Conditions for an experimental chemistry reaction require a temperature of 298 K. The temperature in the lab is 55°F. Which of the following must you do to meet the requirements? (°F = 9/5 (K - 273) + 32)

A. increase the room temperature by 22°F

B. decrease the room temperature by 12°C

C. decrease the room temperature by 33°F

D. increase the room temperature by 18 K 2. Jim, Jane, Ann, and Bill measure an object's length, density, mass, and volume, respectively. Which student's measurement might be in liters?

A. Bill's

B. Jim's

C. Jane's

D. Ann's

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Answers (2)
  1. 15 May, 09:20
    0
    The correct answer for question 1 is B. To arrive at this answer, use the equation given to convert 55F temperature to Kelvin. The answer will be 285.9K. If you subtract 285 from 298 the answer will be 12. The correct answer for question 2 is A. This is because the unit of volume is liter.
  2. 15 May, 12:32
    0
    1) Since 1°F = 9/5 (K - 273) + 32) after the calculus we find 1°F = 255.9 K

    The answer is A. increase the room temperature by 22°F, because 55° F + 22° F = 77° and 77° F = 298.1K,

    2) The answer is A: Bill’s. Bill has measured the object’s volume, and the unit of volume is the liter
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