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If the universal gas constant is 8.3 jou...

If the universal gas constant is 8.3 joule `mol^(-1) K^(-1)` and the Avogadro's number is `6 xx 10^(23)`. The mean kinetic energy of the oxygen molecules at `327^(@)C` will be :

A

`415 xx 10^(23)` joule

B

`2490 xx 10^(-22)` joule

C

`1245 xx 10^(-23)` joule

D

`830 xx 10^(-22)` joule

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If the universal gas constant is 8.3J//"mole"//K and the Avogadro's number is 6xx10^(23) , then the mean K.E. of the oxygen molecules at 327^(@)C will be

    A
    `2.49xx10^(20)J`
    B
    `4.10xx10^(-21)J`
    C
    `8.5xx10^(20)J`
    D
    `1.245xx10^(-20)J`

  • The value of universal gas constant is 8.3J/mole-k, The mean kinetic energy of 32gm of oxygen at .-73^(@)C will be

    A
    480J
    B
    4980J
    C
    2490J
    D
    100J

  • The average kinetic energy of a gas molecule at 27^(@)C is 621xx10^(-1)J . The average kinetic energy of gas molecule at 227^(@)C will be

    A
    `52.2xx10^(-21)J`
    B
    `5.22xx10^(-21)J`
    C
    `10.35xx10^(-21)J`
    D
    `11.35xx10^(-21)J`

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