The fraction of molecular volume to the actual volume occupied by oxygen gas at STP is: (Take the diameter of an oxygen molecule to be 3 Å).
1. 4 × 10−4
2. 5 × 10−4
3. 3 × 10−4
4. 1 × 10−4

Subtopic:  Ideal Gas Equation |
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Molar volume is the volume occupied by $$1$$ mol of any (ideal) gas at standard temperature and pressure is:
(STP: $$1$$ atmospheric pressure, $$0~^\circ \text{C}$$)
1. $$0$$
2. $$22.4$$ litres
3. $$11.2$$ litres
4. $$1$$ litres

Subtopic:  Ideal Gas Equation |
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The figure shows a plot of $$\dfrac{PV}{T}$$ versus $$P$$ for $$1.00\times10^{-3}$$ kg of oxygen gas at two different temperatures.

Then relation between $$T_1$$ and $$T_2$$ is:
1. $$T_1=T_2$$
2. $$T_1<T_2$$
3. $$T_1>T_2$$
4. $$T_1 \geq T_2$$


Subtopic:  Ideal Gas Equation |
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The figure shows a plot of $$PV/T$$ versus $$P$$ for $$1 . 00 \times 10^{- 3} \text{ kg}$$ of oxygen gas at two different temperatures.

The value of $$PV/T$$ where the curves meet on the y-axis is:

Subtopic:  Ideal Gas Equation |
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An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of 27 °C. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm, and its temperature drops to 17 °C. The mass of oxygen taken out of the cylinder is:

1. 0.14 kg
2. 0.16 kg
3. 0.18 kg
4. 0.21 kg

Subtopic:  Ideal Gas Equation |
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An air bubble of volume 1.0 $c{m}^{3}$ rises from the bottom of a lake 40 m deep at a temperature of 12 °C. To what volume does it grow when it reaches the surface, which is at a temperature of 35 °C?
1. 5.3 cm3
2. 4.0 cm3
3. 3.7 cm3
4. 4.9 cm3

Subtopic:  Ideal Gas Equation |
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What is the total number of air molecules (inclusive of oxygen, nitrogen, water vapor, and other constituents) in a room of capacity $$25.0$$ mat a temperature of $$27^\circ \mathrm C$$ and $$1$$ atm pressure?
1. $$6.1\times10^{23}$$ molecules
2. $$6.1\times10^{26}$$ molecules
3. $$7.1\times10^{23}$$ molecules
4. $$7.1\times10^{26}$$ molecules

Subtopic:  Ideal Gas Equation |
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