Gases deviate from ideal behavior at high pressure. Which of the following statement(s) is correct for non-ideality?

The temperatures at which real gases obey the ideal gas laws over a wide range of pressure is called ____________-

The value of the gas constant R is ____________

The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion ie \(\alpha =\frac { 1 }{ V } { \left( \frac { \partial V }{ \partial T } \right) }_{ P }\) For an ideal gas a is equal to ___________

Aerosol cans carry clear warning of heating of the can. Why?

Why do astronauts have to wear protective suits when they are on the surface of moon?

When ammonia combines with HCI, NH₄CI is formed as white dense fumes. Why do more fumes appear near HCI ?

Hydrochloric acid is treated with a metal to produce hydrogen gas. Suppose a student carries out this reaction and collects a volume of 154.4 x 10^-3 dm³ of a gas at a pressure of 742 mm of Hg at a temperature of 298 K. What mass of hydrogen gas (in mg) did the student collect ?

It takes 192 sec for an unknown gas to diffuse through a porous wall and 84 sec for N₂ gas to effuse at the same temperature and pressure. What is the molar mass of the unknown gas ?

A combustible gas is stored in a metal tank at a pressure of 2.98 atm at 25°C. The tank can withstand a maximum pressure of 12 atm after which it will explode. The building in which the tank has been stored catches fire. Now predict whether the tank will blow up first or start melting? (Melting point of the metal = 1100 K).

Derive the values of critical constants in terms of van der Waals constants.