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-   -   Number of O atoms in 9.5 10-3 g CuSO45 H2O (https://www.askmehelpdesk.com/showthread.php?t=514058)

  • Oct 6, 2010, 07:24 AM
    twoudly
    Number of O atoms in 9.5 10-3 g CuSO4ยท5 H2O
  • Oct 6, 2010, 07:51 AM
    Unknown008

    The relative formula mass of CuSO4.5H2O is:

    Mr = 63.5 + 32 + 64 + 5(18) = 249.5

    So, 249.5 g of CuSO4.5H2O contains 1 mol of substance.

    Find the number of moles of substance contain.
    Number of moles = mol.

    Now, each mole of substance holds 9 moles of oxygen atoms.
    Find the number of moles of oxygen atoms in your amount of moles above.

    1 mol --> 9 moles of O
    mol

    Now, 1 mol means

    Find how many does mol mean.

    Post what you get! :)

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