Home
Class 11
PHYSICS
If atomic mass of Argon = 39.9 mu, molec...

If atomic mass of Argon = 39.9 `mu`, molecular mass of chlorine = `70.9mu` then find the ratio of r.m.s speed of argon atom and chlorine gas molecule.

Text Solution

Verified by Experts

Since `(1)/(2)mv_(mn)^(2) = (3)/(2)k_(B)T` = constant
`v_(mn)prop(1)/(sqrt(m))prop(1)/(sqrt(M))` , M is molar mass / atomic mass.
Hence `((v_(mn))Ar)/((V_(mn))Cl)=sqrt(m_(Cl)/(m_(n)))=sqrt(M_(Cl)/(M_(N)))`
`i.e.((V_(mn))Ar)/((V_(mn))Cl)=sqrt((70.9)/(39.9))=sqrt(1.77)=1.33.`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • KINETIC THEORY

    SUBHASH PUBLICATION|Exercise FIVEMARK QUESTION AND ANSWERS|4 Videos

  • GRAVITATION

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|15 Videos

  • LAWS OF MOTION

    SUBHASH PUBLICATION|Exercise Numericals with solutions|15 Videos

Similar Questions

Explore conceptually related problems

What is the mass in grams of a chlorine atom, Cl?

Calculate the rms speed of an ideal gas molecule of mass 2.99xx10^(-25) kg at 300k.

Knowledge Check

  • Haemoglobin contains 0.33% of iron by weight. The molecular mass of haemoglobin is about 67200. The number of iron atoms (at. mass of Fe=56) present in one molecule of haemoglobin is:

    A
    6
    B
    4
    C
    2
    D
    1

  • Hemoglobin contains 0.33% of iron by weight. The molecular mass of haemoglobin is approximately 67200. The number of iron atoms (At. Mass Fe=56) present in one molecule of haemoglobin is

    A
    6
    B
    1
    C
    4
    D
    2

  • Caffeine has a molecular mass of 194. If it contains 28.9% by mass of nitrogen, number of atoms of nitrogen in one molecule of it is

    A
    1
    B
    2
    C
    3
    D
    4

    • Similar Questions

    Explore conceptually related problems

    In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27A. Find the approximate location of the centre of mass of the molecule, given that the chlorine atom is about 35.5 times as massive as a hydrogen atom and nearly all the mass of an atom is concentrated in its nucleus.

    In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27 Å (1 Å = 10^(-10) m) . Find the approximate location of the CM of the molecule, given that a chlorine atom is about 35.5 times as massive as a hydrogen atom and nearly all the mass of an atom is concentrated in its nucleus.

    (a) Esttimate the average drift speed of conduction electrons in a copper wite of cross-secttonal area 1.0 xx 10 ^(-7)m^(2) carrying a current of 1.5A. Assume the each copper atom contrbutes roughly one conduction electron. The density of copper is 9.0 xx 10 ^(3)kg//m^(3), and its atomic mass is 63.5 u. (b) Compare the drift speed obyained above with, (1) thermal speeds of copper atoms at ordinary temperaturtes. (ii) speed of propagation of electric field along the conductor which causes the drift motion.

    If the ratio of partial pressures of two gases is 3 : 2 and atomic mass of monoatiomic gaw is 20.2 unit and molecular mass of diatomic gas is 32.0 unit, then compare their mass densities.

    An alkaloid contains 17-28% of nitrogen and its molecular mass is 162. The number of nitrogen atoms present in one molecule of alkaloid is :

    Home
    Profile