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    munchi0918's Avatar
    munchi0918 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 30, 2008, 07:23 PM
    Can someone solve these for me?
    Decomposition
    Complete and balance the following equations:
    1.MgCO3 ---> +
    2.HgO ---> +
    3. PCl5 ---> +
    4. (NH4)2Cr2O7 ---> + + N2
    5. CuO ---> +
    ISneezeFunny's Avatar
    ISneezeFunny Posts: 4,175, Reputation: 821
    Ultra Member
    		  
    #2

    Jul 30, 2008, 07:27 PM
    sorry bud. No one's going to sit here and do your homework for you. I mean... would you do 20+ problems for someone for poops and giggles?

    We're more than glad to help you out if you have a question about some of them.

    Here's a website to get you started on balancing equations

    http://richardbowles.tripod.com/chemistry/balance.htm
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Aug 2, 2008, 03:00 AM
    You should know that

    Metal carbonates decompose into their respective oxides, plus carbon dioxide
    Metal oxides decompose into the metal itself and oxygen
    And so on. Of course, there are exceptions that you should also keep in mind to minimise errors for exams.

    Now, all that remains is balancing, and that, ISneezyFunny gave you a nice link for understanding that.

    Hope it helped!
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