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    xoxosweetgrl's Avatar
    xoxosweetgrl Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 10, 2011, 03:50 PM
    finding the element
    a sample of 0.3127 mole of compound Li2ZO4 has a mass of 41.53g. The element Z is?

    Fe
    I
    Cr
    n
    Br

    Explain please how you got the answer
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
    Computer Expert and Renaissance Man
    		  
    #2

    Oct 10, 2011, 04:25 PM
    Thank you for asking our help with your homework assignment. However, there are some rules we have for doing so.
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    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Oct 11, 2011, 09:05 AM
    1. Find the mass of 1 mole of the substance using proportions.
    2. Find the mass of Li2 and O4 in the substance.
    3. Subtract 2 from 1 to get the mass of Z.
    4. Compare in the given answers to get Z.
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