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What is the molar mass of a gas or vapou...

What is the molar mass of a gas or vapours under N.T.P. conditions?

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Knowledge Check

  • The compressibility factor (Z) for one mole of a gas is more than one under S.T.P. conditions. Therefore

    A
    `V gt 11.2 L`
    B
    `V lt 22.38 L`
    C
    `V gt 22.38 L`
    D
    `V = 22.38 L`

  • 4.4 g of an unknown gas occupies 2.24 L of volume under N.T.P. conditions. The gas may be :

    A
    `CO_(2)`
    B
    CO
    C
    `O_(2)`
    D
    `SO_(2)`

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. The vapour density of a mixture containing NO_(2) and N_(2)O_(4) is 38.3 at 27^(@)C . the moles of NO_(2) in 100 moles of mixture are:

    A
    33.48
    B
    53.52
    C
    38.3
    D
    76.6

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    Explore conceptually related problems

    A sample of gaseous substance weighing 0.5 g occupies a volume of 1.12 litres under N.T.P. conditions. Calculate the molar mass of the substance.

    The mass of water vapour in air enclosed in a certain space 60g and the mass of water vapour needed to saturate the same air with water vapour under the same condition is 100g.What is the corresponding % relative humidity ?

    Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. At STP, 5.6 litre of a gas weighs 60g. the vapour density of gas is:

    Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Vapour density of a metal chloride is 66. its oxide contains 53% metal. the atomic mass of the metal is:

    For the formation of 3.65 g of hydrogen chloride gas, what volumes of hydrogen gas and chlorine gas are required at N.T.P. conditions?

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