9) of the following gases, will have the greatest rute of effusion at a given te

Question

9) of the following gases, will have the greatest rute of effusion at a given temperature. AnswerB 10) Arrange the following gases in order of increasing average molecular speed at 25°C. He, 02, COz, N2 Answer ( 11) A real gas will behave most like an ideal gas under conditions of A) high temperature and high pressure C) low temperature and high pressure E) At STP (Standard Temperature and Pressure) B) high temperature and low pressure D) low temperature and low pressure Answer ( 12) In the graph shown, which line is the best representation of Boyle's Law regarding behavior of a gas in a closed system at constant temperature? Pressure (atm A) A B) B C)C D) D E) E Answer 13) Three separate 3.5g blocks of Al, Cu, and Fe at 25 C each absorb 0.505 kJ of heat. Which block reaches the highest temperature? The specific heats of Al, Cu, and Fe are 0.900 Jg°C, 0.385yg. and 0.4441 g respectively AAICOP4 Answer 14) Which of the following has a 1,-0kJmol? A) CO(g) Answer B) NO(g) CO)HoD)NH(aq)E)1:(6)

Explanation / Answer

Q10

Apply the RMS equation

RMS =sqrt(3*RT/MW)

where, R = ideal gas constant, T = temperature, MW moalr mas in kg/mol

then, the larger the mass, the slower it becomes

from the list

He >> N2 > O2 > CO2

Q11

real gases behave ideal when P is low and T is high

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