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Sourav posted an Question
August 14, 2020 • 03:05 am 30 points
  • IIT JAM
  • Chemistry (CY)

A1l litre flask contains 20g of neon and an unknown weight ofhydrogen. the gas density is found a to be 2g/litre at 0°c. what is the average molecular weight? (

A1l litre flask contains 20g of neon and an unknown weight ofhydrogen. The gas density is found A to be 2g/litre at 0°C. What is the average molecular weight? (a) 11 (b) 12 (c) 13 (d) 10

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  • Suman Kumar

    option A is correct Sourav

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    Is molecular mass of mix and average molecular mass different?

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    No Sourav

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    but here 22 g is the molecular mass of mixture?

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    oh ! for mixture we take mass of all gas Sourav but in average mass we find mass of one mole

  • Suman Kumar Best Answer

    See this

    cropped2600864377987252959.jpg
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    Did you get this

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    Sourav?

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    please ask

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    if you don't get anything 🙏

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    here 22 g is the mass of mixture? mass of mixture and average mass of mixture different?

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    yes Sourav. sorry for little confusion 😬🙏

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    average mass and average molecular mass same or different?

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    they are same na Sourav. Molecular mass is for one mole

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    im a bit confused.. i want to know the difference btw 11 g and 22g here

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    See 22 g is mass of all gases in flask.

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    But 22 g contain 2 mole of gases. If the gas were same then molecular mass but gases are different so average molecular mass

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    so molecular mass of mixture and average molecular mass of mixture are different?

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    same Dear

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