The pressures P and volumes V of five ideal gases, with the same number of molecules, are given below. Which has the highest temperature?
a. P = 1 × 105 Pa and V = 10cm3
b. P = 3 × 105 Pa and V = 6cm3
c. P = 4 × 105 Pa and V = 4cm3
d. P = 6 × 105 Pa and V = 2cm3
e. P = 8 × 105 Pa and V = 2cm3
An adiabatic process for an ideal gas is represented on a p-V diagram by:
a. a horizontal line
b. a vertical line
c. a hyperbola
d. a circle
e. none of these
The temperature of low pressure hydrogen is reduced from 100°C to 20°C. The rms speed of its molecules decreases by approximately:
Which, of the following temperature changes, would show the smallest change in entropy for a pan of water on a hot plate?
1. 20°C to 30°C
2. 30°C to 40°C
3. 40°C to 45°C
4. 80°C to 85°C
b. 1 and 2 are tied for smallest ΔS
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