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Chemistry

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calculate the number of K atoms in a 1.00 ug sample of pure KCL. K=39.1 g/mol and KCL= 74.6 g/mol.

  • Chemistry - ,

    How many moles are there in 1 ug KCl?
    moles = grams/molar mass
    moles KCl = moles K = moles Cl, then
    1E-6g/molar mass KCl.
    There are 6.022E23 ions K or Cl (or molecules KCl) in 1 mol KCl. Set up a proportion.

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