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Chapter 9: Problem 1329
For a gas \(\gamma=(7 / 5)\), the gas may probably be (A) Neon (B) Argon (C) Helium (D) Hydrogen
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One mole of ideal monoatomic gas \([\gamma=(5 / 3)]\) is mixed with one mole of diatomic gas \([\gamma=(7 / 5)]\). What is \(\gamma\) for the nixture? \(\gamma\) denotes the ratio of specific heat at constant oressure to that at constant volume. (A) \((35 / 23)\) (B) \((23 / 15)\) (C) \((3 / 2)\) (D) \((4 / 3)\)
\- decrease the volume of gas by \(\supset \%\) at constant temperature the pressure should be (A) Increased by \(5.26 \%\) (B) Decreased by \(5.26 \%\) (C) Decreased by \(11 \%\) (D) Increased by \(11 \%\)
Gas at a pressure \(\mathrm{P}_{0}\) is contained in a vessel. If the masses of all the molecules are halved and their speeds are doubled, the resulting pressure will be equal to (A) \(2 \mathrm{P}_{0}\) (B) \(4 \mathrm{P}_{0}\) (C) \(\left(\mathrm{P}_{0} / 2\right)\) (D) \(\mathrm{P}_{0}\)
The temperature of an ideal gas is increased from \(27^{\circ} \mathrm{C}\) to \(127^{\circ} \mathrm{C}\), then percentage increase in \(\mathrm{v}_{\mathrm{rms}}\) is (A) \(33 \%\) (B) \(11 \%\) (C) \(15.5 \%\) (D) \(37 \%\)
The rms speed of gas molecules is given by (A) \(2.5 \sqrt{\left[M_{0} /(R T)\right]}\) (B) \(\left.2.5 \sqrt{[}(\mathrm{RT}) / \mathrm{M}_{0}\right]\) (C) \(\left.1.73 \sqrt{[}(\mathrm{RT}) / \mathrm{M}_{0}\right]\) (D) \(1.73 \sqrt{\left[M_{0} /(R T)\right]}\)
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