A certain amount of ideal monatomic gas is maintained at constant volume as it is cooled from 455K to 405 K. This feat is accomplished by removing 400 J of heat from the gas. How much work is done by the gas during this process?
The ideal gas constant is R = 8.314 J/mol ? K.
A) 0.00 J
B) 200 J
C) 400 J
D) -400 J
E) -200 J
Answer: A
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From its orbit, we now recognize Pluto as one of the largest members of the
A) moons of Neptune. B) asteroid belt. C) Kuiper Belt. D) Oort Cloud. E) Zodiacal Belt.
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A microscope has an objective lens of focal length 1.40 mm and an eyepiece of focal length 20.00 mm. It is adjusted for minimum eyestrain for persons with a near point of 25.0 cm. A blood sample is placed 1.50 mm from the objective
How far apart are the lenses? A) 20 mm B) 21 mm C) 23 mm D) 41 mm