24.0 moles of a diatomic ideal gas with a molar specific heat 5R/2 is heated from 20.0°C to 100°C. What is the change in entropy of the gas?
A)
-0.365 J/K
B)
0.365 J/K
C)
802 J/K
D)
-19.9 J/K
E)
120 J/K
E
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Why do scientists assume that the early universe was much hotter and denser than the universe of today?
A) The fact that the universe is expanding implies that objects were closer together in the past, and compressing material makes it hotter and denser. B) All objects begin their existence in a hot and dense state. C) The fact that the universe is filled with stars and galaxies implies that matter must once have been hot to have made these objects. D) Observations of distant galaxies show that they are much hotter than galaxies of today, suggesting that the whole universe was hotter in the past.
The most basic definition of life which takes account of the relative importance of the six fundamental properties of living things is that life is something that can
A) grow and develop B) respond to environmental changes C) utilize energy D) reproduce and evolve through natural selection
An object may have potential energy because of its
A) speed. B) acceleration. C) momentum. D) location. E) none of the above
A constant volume closed container of gas is at a pressure 1.00 × 105 N/m2 and a temperature 20°C. What is the pressure if the temperature of the gas is increased to 60.0°C?
A) 0.330 × 105 N/m2 B) 9.00 × 105 N/m2 C) 0.880 × 105 N/m2 D) 3.00 × 105 N/m2 E) 1.14 × 105 N/m2