A mixture of Ne and Ar kept in a closed vessel at 250 K has a total K.E.=3 kJ. The total mass of Ne and Ar is 30 g. Find mass % of Ne in gaseous mixture at 250 K.

A gaseous mixture of Ne and O_(2) is taken in a copper vessel of 200mL capacity at 6 bar and 27^(@)C . The vapur density of the gaseous mixture is 11.5. Now, the vessel is heated to 127^(@)C , at which half of the O_(2)(g) combined with the vessel forming a solid oxide of negligible volume. Neglecting thermal expansion in the vessel, the final partial pressure of O_(2)(g) is : (Ne=20)

A gaseous mixture containing 0.35g of N_(2) and 5600 ml of O_(2) at STP is kept in a 5 litres flask at 300K. The total pressure of the gaseous mixture is

A gaseous mixture containing 0.35g of N_(2) and 5600 ml of O_(2) at STP is kept in a 5 litres flask at 300K. The total pressure of the gaseous mixture is

15g mixture of He and Ar occupied "30L" at "1" atm pressure and "300K" .The amount of He in the mixture "