A gaseous hydrocarbon of volume 10 mL at STP is mixed with 80 mL of `O_(2)` and burnt completely. As a result, the volume of the gaseous mixture was reduced to 70 mL. on treating the obtained gaseous mixture with KOH solution, the volume becomes 50 mL. determine the molecular formula of the hydrocarbon.

20cm^(3) of gaseous hydrocarbon mixed with excess of oxygen is exploded. A contraction in the volume of 30cm^(3) takes place. On treating the produces gaseous mixture with KOH solution, it sufffers a further contraction of 40 cm^(3) . Determine the molecular formula of the hydrocarbon. [all volumes are measured at the same temperature and pressure].

At STP, the volume of 1 g of a gaseous substance is 280 mL. find its relative molar mass.

At 300 K and 1 atm, 15 mL of gaseous hydrocarbon requires 375 mL air containing 20% O_(2) by volume for complete combustion. After combustion the gases occupy 330 mL. assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is-

9.0 mL of a mixture of CH_4 and C_2H_4 is mixed with 30.0 mL of O_2 and the mixture is exploded in an eudiometer tube. On cooling, the resulting gas mixture occupy a volume of 21.0 mL. on shaking the residual gas with KOH, the volume becomes 7.0 mL. Find the volumes of CH_4 and C_2H_4 in the mixture (All volumes are measured at the same temperature and pressure)

10 mL of a gaseous hydrocarbon is completely combusted with 60 mL of oxygen by passing electric spark. The volume of the gaseous mixture thus yielded on cooling becomes 46 mL, iff the vapour density of the compound is 15, what will be its molecular formula? [All volumes were measured under the same conditions of temperature and pressure.]

10 mL of a gaseous organic compound composed off carbon, hydrogen and oxygen is mixed with 100 mL of oxygen and subjected to explosion. Volume of the mixture produced by explosion when cooled becomes 90 mL. on treatment with KOH, the volume is reduced by 20 mL. mass of 1 L of gaseous organic compound is 2.053 g at STP. determine the molecular formula.

When an acetylenic hydrocarbon, in presence of excess oxygen is exploded, it shows a contraction in volume by 50 mL. a further contraction of 75 mL is observed when the obtained gas mixture comes in contact with KOH solution. Determine the molecular formula of the compound.

5 mL of a gas composed of hydrogen and carbon is mixed with 30 mL of oxygen and exploded with electric sparking. The volume of the gas mixture, obtained by explosion is found to be 25 mL. KOH is then addded to the mixture and as a result, its volume is reduced to 15 mL. the residual gas is purely oxygen. all volumes have been measured at STP. what is the molecular formula of the gas?

20cm^(3) of a hydrocarbon mixed with 66cm^(3) of oxygen is exploded. After cooling the gaseous mixture, the volume becomes 56cm^(3) . The volume of this mixture when shaken with KOH solution reduces to 16cm^(3) . Determine the formula of the hydrocarbon. [all volumes are measured at the same temperature and pressure].

60 mL of a mixture of CO and H_(2) , mixed with 40 mL of O_(2) , are subjected to explosion in a eudiometer tube. On cooling the gas mixture after the end of the reaction, the volume is reduced to 30 mL. determine the compostion of the gas mixture initially taken. [All volumes are measured at the same temperature and pressure].