The temperature of an ideal gas in a sealed 0.40 m3 container is reduced from 400 K to 270 K. The final pressure of the gas is 30 kPA. The molar heat capacity at constant volume of the gas is 28.0 J/mol K. The work done by the gas is closest to
A) 0.00 kJ.
B) -19 kJ.
C) -25 kJ.
D) 19 kJ.
E) 25 kJ.
Question 2
An electronic game requires 6 V for operation. With a transformer it can be powered by a 120-V outlet. If the primary has 500 turns, the secondary has
A) 4 turns.
B) 25 turns.
C) 50 turns.
D) more than 50 turns.
E) none of the above
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
Ranges of normal temperature values
Average Global Temperature Rise over the Past Century
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