Recent questions tagged states-of-matter

A 2.24 litre cylinder containing $O_2$ gas at $27^{\large\circ}C$ and 2 atm is found to develop a leakage was repaired , the pressure dropped to 100cm of Hg at $27^{\large\circ}C$ . The number of moles of gas escaped out during leakage is :

asked Mar 5, 2014 by sharmaaparna1

1 answer

A flask containing 12g of a gas of relative molecular mass 120 at a pressure of 100 atm , was evacuated by means of a pump untill the pressure was 0.01 atm at the same T. Which of the following is the best estimate of the number of molecules left in the flask. $(N_0 = 6\times10^{23} mol^{-1}$)

asked Mar 5, 2014 by sharmaaparna1

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If $V_0$ is the volume of the given mass of a gas at 273K and pressure P , then according to Charles's law the volume of same mass of gas at $10^{\large\circ}C$ and pressure P will be

asked Mar 5, 2014 by sharmaaparna1

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A quantity of hydrogen gas occupies a volume of 30.0mL at a certain temperature and pressure. What volume of half of this mass of hydrogen occupy at triple the absolute temperature if the pressure were one-ninth the original gas?

asked Mar 5, 2014 by sharmaaparna1

1 answer

Two separate bulbs contain gas A and gas B. The density of gas A is twice as that of B. The molecular mass of A is $\large\frac{1}{2}$ as that of B. If temperature is constant, the ratio of the pressure of A and B is :

asked Mar 5, 2014 by sharmaaparna1

1 answer

4.0g of argon has pressure P at temperature T K in a vessel . On keeping the sample at $50^{\large\circ}C$ higher temperature 0.8g gas was given out to maintain the pressure P. The original temperature was:

asked Mar 5, 2014 by sharmaaparna1

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The value of universal gas constant R depends on..

asked Mar 5, 2014 by sharmaaparna1

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One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas. The molar specific heat of the mixture at constant volume is.

asked Mar 5, 2014 by sharmaaparna1

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If one mole of a monoatomic gas ($\gamma = \large\frac{5}{3}$) is mixed with one mole of a diatomic gas ($\gamma = \large\frac{7}{5}$) . The value of V for the mixture is :

asked Mar 5, 2014 by sharmaaparna1

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The joule - Thomson coefficient for a gas is zero at

asked Mar 3, 2014 by sharmaaparna1

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What is the pressure of 2 mole of ammonia at $27^{\large\circ}C$ when its volume is 5 litre according to Van der Waal's equation? (a = 4.17 b = 0.03711)

asked Mar 3, 2014 by sharmaaparna1

1 answer

A gas obeys the equation of state P(V-b) = RT (The parameter b is a constant). The slope for an isochore will be

asked Mar 3, 2014 by sharmaaparna1

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At low pressure Van der Waal's equation is reduced to $[P+\large\frac{a}{V^2}]V = RT$ The compressibility factor can be given as

asked Mar 3, 2014 by sharmaaparna1

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At high temperature and low pressure , the Van der Waal's equation is reduced to

asked Mar 3, 2014 by sharmaaparna1

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At low pressure , the Van der Waal's equation is written as

asked Mar 3, 2014 by sharmaaparna1

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Under critical conditions , the compressibility factor for a gas is

asked Mar 3, 2014 by sharmaaparna1

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If $U_{rms} is\; 30 R^{\large\frac{1}{2}}\; at \;27^{\large\circ}$ then the molar mass of the gas in kg is

asked Mar 3, 2014 by sharmaaparna1

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If the absolute temperature of a sample in a fixed volume container is quadrupled then the root mean square speed in the initial state $u_i$ and that in the final stage $u_f$ would be related as:

asked Mar 2, 2014 by sharmaaparna1

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The rms velocity can be calculated by

asked Mar 2, 2014 by sharmaaparna1

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At room temperature , the rms speed of molecules of a certain diatomic gas is formed to be 1930 m/Sec . The gas is

asked Mar 2, 2014 by sharmaaparna1

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Four particles have speed 2,3,4 and 5 cm/sec respectively. Their RMS speed is

asked Mar 2, 2014 by sharmaaparna1

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Average velocity of the molecules of a gas in a container moving in one dimension is

asked Mar 2, 2014 by sharmaaparna1

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If P is the pressure of gas, then the kinetic energy per unit volume of the gas is

asked Mar 2, 2014 by sharmaaparna1

1 answer