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    kimcharles's Avatar
    kimcharles Posts: 4, Reputation: 1
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    #1

    Mar 8, 2011, 03:30 PM
    According to the equation of NA2O2 + H2O = 4NAOH + O2, how many moles of water are needed to fully react with 10 moles of sodium oxide?

    The balanced equation is 2Na2O2 + H2O = 4 NAOH + O2. I don't get how to start.

    How do you figure out the formula to use for: how many grams of water are needed to fully react with 200 grams of sodium oxide?
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
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    #2

    Mar 8, 2011, 04:55 PM

    So, kimcharles, why are you asking this questions three times, possible because you didn't get an answer immediately ? Sorry, we are all volunteers here and possibly our chemistry person won't be around for a while because she has another paying job.

    Tick
    DrBob1's Avatar
    DrBob1 Posts: 425, Reputation: 86
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    #3

    Mar 8, 2011, 08:36 PM
    Your reactions are NOT correctly balanced as written: neither O nor H add up correctly.
    Fix that problem and maybe you will have success.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Mar 8, 2011, 10:29 PM

    kimcharles: Your threads were merged

    Balanace correctly your equation first, making sure your symbols are correct. 'NA' should be written as 'Na' for instance
    kimcharles's Avatar
    kimcharles Posts: 4, Reputation: 1
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    #5

    Mar 23, 2011, 10:12 AM
    Comment on tickle's post
    Umm no. I didn't realize I had submitted the question 3 times. It is hard to figure out if you have submitted and my computer kept timing out. No offense.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #6

    Mar 23, 2011, 11:38 AM

    But... what about the question? How did you do it?
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
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    #7

    Mar 23, 2011, 12:14 PM

    Hi kimcharles, no offence taken, just wondering why you did that.

    Tick
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