1) Which of the following is not true about an ideal gas? The molecules are assu
ID: 1471460 • Letter: 1
Question
1) Which of the following is not true about an ideal gas?
The molecules are assumed to be far apart compared to their size.
2) What speed would a 1.0-g paper clip have if it had the same kinetic energy as a molecule at 23 C?
Express your answer to two significant figures and include the appropriate units.
The average kinetic energy of the gas molecules increases as the temperature increases. The volume of an ideal gas increases with temperature if the pressure is held constant. The pressure of an ideal gas increases with temperature if the volume is held constant. All gas molecules have the same speed at a particular temperature.The molecules are assumed to be far apart compared to their size.
2) What speed would a 1.0-g paper clip have if it had the same kinetic energy as a molecule at 23 C?
Express your answer to two significant figures and include the appropriate units.
Explanation / Answer
1) the wrong option is All gas molecules have the same speed at a particular temperature.
2) (3/2)(kB)(T) = (1/2)mv²
(3/2)(1.381x 10-23 J/K)(296 K) = (1/2)(1.0 x 10-3 kg)v²
v = 3.50 x 10-9 m/s
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