`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].

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].

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].

When 100 mL of ozonised oxygen is shaken with turpentine oil, volume decreases by 20 mL. when 100 mL of the same sample is heated, the mixture occupies a volume of 110 mL. determine the molecular formula of ozone. [All volumes are measured under same temperature and pressure.]

Find the edge of a cube whose volume is 1000 cm ^(3)

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.]

A mixture contains CO, CH_(4) and nitrogen. 25cm^(3) of the mixture on oxidation in presence of excess oxygen, resulted in the decrease in volume by 16cm^(3) . A further contraction of 17cm^(3) was observed when the residual gas was treated with KOH soltuion. what was the composition of the original gaseous mixture of 25cm^(3) volume? [All volumes are measured at the same temperature and pressure].

25 mL of a mixture containing nitrogenn and nitric oxide is passed over heated copper. The volume of gaseous mixture becomes 20 mL. what is the percentage composition of the original mixture. [all volumes are measrued at the same temperature].

Combustion of 1 volume of a compound (contains of C, H and N) in air produces 3 volumes of CO_(2) and 4.5 volumes water vapour and 0.5 volume of N_(2) . Calculate the molecular formula of the compound. [all volumes are measured at same temperature and pressure].

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?