A sample of phosphorus that weighs `12.4g` exerts a pressure 8 atm in a `0.821` litre closed vesel at `527^@ C`. The molecular formula of the phosphorus vapour is :

34.05 mL of phosphorus vapour weighs 0.0625 g at 546^(@)C and 0.1 bar pressure. What is the molar mass of phosphorus ?

34.05 mL of phosphorus vapour weighs 0.0625 g at 546 ∘ C and 0.1 bar pressure. What is the molar mass of phosphorus?

A certain sample of gas has a volume of 0.2 litre measured at 1 atm pressure and 0^(@)C . At the same pressure but at 273^(@)C , its volume will be

A sample of 16 g charcoal was brought into contact with CH_(4) gas contained in a vessel of 1 litre at 27^(@) C . The pressure of gas was found to fall from 760 to 608 torr. The density of chacoal sample is 1.6 g//m^(3) . What is the volume of the CH_(4) gas adsorbed per gram of the adsorbent at 608 torr and 27^(@)C ? 125 L//g , 16.25 mL//g , 26 mL//g , none of these .

Total number of moles of oxygen atoms in 3 litre O_3 (g) at 27^@ C and 8.21 atm are :

A gaseous compound is composed of 85.7% by mass carbon and 14.3% by mass hydrogen. Its density is 2.28 g/litre at 300 K and 1.0 atm pressure. Determine the molecular formula of the compound.

A solution containing 4.0 g of PVC in 2 liter of dioxane (industrial solvent ) was found to have an osmotic pressure 3.0 x 10^(-4) atm at 27^(@)C . The molar mass of the polymer (g/mol) will be :

At room temperature following traction goes to completion 2AB(g)+B_(2)(g)rarr2AB_(2)(s) AB_(2) is solid with negligble vapour pressure below 0^(@)C . At 300 K, the AB in the smaller flask exerts a pressure of 3 atm and in the larger flask B_(2) exerts a pressure of 1 atm at 400 K when they are separated out by a close valve, The gases are mixed by opening the stop cock and after the end of the reaction the flask are cooled to 250 K The final pressure is :

The gaseous decomposition reaction, A(g)rarr2B(g)+C(g) is observed to first order over the excess of liquid water at 25^(@)C . It is found that after 10 minutes the total pressure of system is 188 torr and after very long time it is 388 torr. The rate constant of the reaction (in hr^(-1)) is : [Given : vapour pressure of H_(2)O at 25^(@) is 28 torr (ln 2=0.7 , ln 3=1.1, ln10=2.3) ] a) 0.02 b) 1.2 c) 0.2 d) none of these