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].

Calculate the volume of O_(2) gas requried for complete burning of 10 L of acetylene gas. Also calculate the volume of CO_(2) produced. All volumes are measured at 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].

Calculate the volume of 3.6g of water vapour at 273K temperature and 1 atm pressure.

10 ml of H_2 contain 2000 molecules under certain temperature and pressure. Calculate the number of molecules of oxygen whose volume is 150 ml at same temperature and pressure.

An organic compound consists of C, H and N. 0.5g of the compound, on combustion, forms 1.44g of CO_(2) and 0.3785g of water, find the molecular fomrula of the compound if its vapour density is 53.35.

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.]

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].

What is the volume of 22 gm CO_2 at 27^@C temperature and 380 mm of Hg 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.]