Posted by Jamal on Friday, September 21, 2007 at 1:27pm.
Balance the equation first.
Then, change the 22.4 g O2 to moles.
Look at the coefficents in the balanced equation. That tells you how much mass of mercury(II)oxide is needed. I will be happy to critique your work, if needed.
Thanks... I don't understand, but I'm actually trying to help my daughter...hope this helps her... I have a couple more questions that I'm going to post.
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