States of Matte...

The molecular weight of a gas is 40. At 400K, if 120g of this gas has a volume of 20 litres, the pressure of the gas is?

An open flask has Helium gas at 2atm and 327$$^{\circ}C$$. The flask is heated at 527$$^{\circ}C$$ at the same pressure. The fraction of original gas remaining in the flask is?

At $$127^0C$$ and 1 atm pressure, a mixture of a gas contains 0.3 mole of $$N_2$$ and 0.2 mole of $$O_2$$. The volume of the mixture is?

Dry ice is solid carbon dioxide. A $$0.05\ g$$ sample of dry ice is placed in an evacuated $$4.6$$L  vessel at $$30^0$$C. Calculate the pressure inside the vessel after all the dry ice has been converted to $$CO_2$$ gas.

A mixture of ethanol and propanol has vapor pressure 279 mm of Hg at 300 K. The mol fraction of ethanol in the solution is 0.6 and vapour pressure of pure propanol is 210 mm of Hg. Vapour pressure of pure ethanol will be:

A gas at a pressure of $$5\ atm$$ is heated from $$0^{o}$$ to $$546^{o}C$$ and simultaneous compressed to $$\dfrac {1}{3}rd$$ of it original volume. Hence final pressure is?

The vapour pressure of a pure liquid A is 70 torr at 300 K. It forms an ideal solution with another liquid B. The mole fraction of B in the solution is 0.2 and total pressure of solution is 84 torr at 300 K. The vapour pressure of pure liquid B at 27C is ?

The boiling point of $$ C_{6}H_{6},CH_{3}OH, C_{6}H_{5}NH_{2} $$ and $$C_{6}H_{5}NO_{2}   $$ are $$ 80^{\circ},\ 65 ^{\circ},\ 184^{\circ}$$ and $$212^{\circ} $$ respectively. Which will show highest vapourr pressure at room temperature?

Kinetic energy of gas depends on:

One mole of non volatile solute is dissolved in two moles of water. The vapour pressure of the solution relative to that of water is: