A gas-mixture having 1200 mL volumea t `27^(@)C` and 1 atm pressure consists of 80% of methane % 20% of CO. what amount of `KClO_(3)` on thermal decomposition produces the same quantity off oxygen as needed for complete combustion of the mixture?

1.5g of a mixture of CaCO_(3) and MgCO_(3) , on ignition, produces 360mL of CO_(2) at STP. Calculate the percentage composition of the mixture.

Volume of a given mass of an ideal gas is VL at 27^(@)C and 1 atm pressure. If volume of the gas is reduced by 80% at constant pressure, temperature of the gas will have the be-

2 volumes of O_(3) produce 3 volumes of O_(2) on complete decomposition. 40 mL of a mixture of O_(3) and O_(2) is heated at first and then brought back to the previous temperature and pressure. The volume of the gaseous mixture is now found to be 42 mL. find the percentage composition of O_(3) in the gas mixture by volume. the volume of all gases are measured under the same conditions of temperature and pressure.

A gaseous mixture contains 50% of H_(2),40% of CH_(4) and 10% of O_(2) . What additional volume of O_(2) at STP will be required to completely burn 200cc of this gaseous mixture at 27^(@)C and 750 mm pressure ?

Air contains 21% of oxygen by volume. What volume of that air at 27^(@)C and 750 mm pressure of Hg will be required for complete combustion of 60g of a candle. The candle contains 80% of carbon and 20% of hydrogen by mass.

0.05g of a commercial sample of KClO_(3) on decomposition liberated just sufficeint oxygen for complete oxidation of 20 mL CO at 27^(@)C & 750 mm pressure. Calculate & of KClO_(3) in the sample.

A closed vessel of fixed volume is filled with 3.2g O_(2) at a pressure of P atm and at a temperature of TK. The container is then heated to a temperature of (T+30)K. to maintain the pressure of P atm inside the container at (T+30)K, a certain amount of gas is removed from the container. the gas removed is found to have a volume of 246 mL at 1 atm and 27^(@)C . calculate T.

A mixture of O_(2) and H_(2) gases contains 20% of H_(2) gas. At a certain temperature, the total pressure of the mixture is found to be 1 bar. What is the partial pressure of O_(2) (in bar) in the mixture?