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NEET-XI-Chemistry

01: Some Basic Concepts of Chemistry

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Qstn# 10-i Prvs-QstnNext-Qstn
  • #10-i
    Number of moles of carbon atoms.
    () Number of moles of hydrogen atoms.
    () Number of molecules of ethane.
    () Number of moles of hydrogen atoms.
    () Number of molecules of ethane.
    Ans : 1 mole of C2H6 contains 2 moles of carbon atoms.

    ∴ Number of moles of carbon atoms in 3 moles of C2H6

    = 2 × 3 = 6
    () 1 mole of C2H6 contains 6 moles of hydrogen atoms.

    ∴ Number of moles of carbon atoms in 3 moles of C2H6

    = 3 × 6 = 18
    () 1 mole of C2H6 contains 6.023 × 1023 molecules of ethane.

    ∴ Number of molecules in 3 moles of C2H6

    = 3 × 6.023 × 1023 = 18.069 × 1023


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    () 1 mole of C2H6 contains 6 moles of hydrogen atoms.

    ∴ Number of moles of carbon atoms in 3 moles of C2H6

    = 3 × 6 = 18
    () 1 mole of C2H6 contains 6.023 × 1023 molecules of ethane.

    ∴ Number of molecules in 3 moles of C2H6

    = 3 × 6.023 × 1023 = 18.069 × 1023


    Page No 23:
  • #10-ii
    Number of moles of hydrogen atoms.
    Ans : 1 mole of C2H6 contains 6 moles of hydrogen atoms.

    ∴ Number of moles of carbon atoms in 3 moles of C2H6

    = 3 × 6 = 18
  • #10-iii
    Number of molecules of ethane.
    Ans : 1 mole of C2H6 contains 6.023 × 1023 molecules of ethane.

    ∴ Number of molecules in 3 moles of C2H6

    = 3 × 6.023 × 1023 = 18.069 × 1023


    Page No 23: