Gas Laws

Arrange the following relevant points in a proper sequence for explaining why Kelvin scale is preferred to Celsius scale in the study of gases.

1. $-273°\mathrm{C}$ is the least possible temperature.
2. A graph of volume vs temperature is a straight line passing through origin.
3. A graph of volume vs temperature $\left(0°\mathrm{C}\right)$ is a straight line which intersects volume axis at some point.
4. Extrapolation of straight line touches the volume axis at$-273°\mathrm{C}$.
5. $-273°\mathrm{C}$ is called absolute zero or $0 \mathrm{K}$.
6. All values of temperature are positive in Kelvin scale.
7. Usage of negative values for temperature gives negative values for other properties like pressure and volume.

If the volume occupied by a certain mass of gas is decreased by $60\%$, what would be the percentage change in pressure at the same temperature?

At what centigrade temperature, will the volume of a given mass of a gas at $0°\mathrm{C}$ triple itself if pressure is kept constant?

Three gas cylinders of equal capacity are filled with oxygen and two unknown gases X and Y respectively at the same temperature and pressure. Calculate the gram molecular masses of X and Y if the mass of oxygen in the cylinder is $8 \mathrm{g}$ and X and Y are $5 \mathrm{g}$ and $20 \mathrm{g}$ respectively.

At certain amount of a gas is filled in a tank of volume $63000 \mathrm{L}$ and $42 \mathrm{atm}$. If this gas is transferred to a cylinder of volume of $1260 \mathrm{L}$, find the number of cylinders that can be filled with the given gas at STP? (assume complete evacuation of the cylinder)

Why is temperature in Kelvin scale always positive? Also explain why Kelvin temperature is used only in studying gas laws.

At constant temperature, a gas is at a pressure of $940 \mathrm{mm} \mathrm{of} \mathrm{Hg}$. At what pressure, its volume decreases by $40\%$?

For which of the following reactions, is Gay-Lussac's law is not applicable?

State Gay-Lussac's law of combining volumes of gases. Give an example. 

What is STP? Give the values of temperature and pressure at STP. 

Which of the following graphs is true for the given mass a gas at constant temperature?

At constant temperature, when the volume of a gas is reduced to ${\left(1/3\right)}^{\mathrm{rd}}$, the pressure will increase _____.

Which of the following graphs is true for a given mass of a gas at constant pressure?

Which of the following graphs is true for the given mass a gas at constant temperature?

Charle's law states that the rate of diffusion of a gas is inversely proportional to the square root of its density at constant temperature and pressure.

Avogadro's law states that under similar conditions of temperature and pressure, equal volumes of all gases contain equal number of molecules.

Boyle's law state that, for a given mass of a gas, the volume of a gas (V) is directly proportional to the absolute temperature (T) at constant pressure.

Real gases obey gas law under all conditions.

The volume of $32 \mathrm{g}$ of oxygen at STP is $22.4 \mathrm{L}$.

Volume of the given mass of a gas is directly proportional to pressure at constant temperature.