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jazzy12 Group Title

If you burn 36.7g of hydrogen and produce 328g of water, how much oxygen reacted?

  • 2 years ago
  • 2 years ago

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  1. MarcLeclair Group Title
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    Balance youre equation first. Then use stoichiometry. You know how?

    • 2 years ago
  2. muhammad9t5 Group Title
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    H------------>H2O H+O2-------->2H2O 4H+O2------->2H2O now use stoichiometry.

    • 2 years ago
  3. MarcLeclair Group Title
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    H by itself has a 2 .... its a diatatomic element. Whenever its alone it is found in a pair of 2. so you do NOT end up with 4H

    • 2 years ago
  4. jazzy12 Group Title
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    \[2H _{2}+O _{2}=2H _{2}O\]

    • 2 years ago
  5. jazzy12 Group Title
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    That is the balanced equation but i don't remember what to do next, it's been a while since I've worked on chemistry.

    • 2 years ago
  6. MarcLeclair Group Title
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    Hum you have 36.7 grams of whater, than just do grams-->mole of h2 ---> moles of o2 ---> grams of o2

    • 2 years ago
  7. JFraser Group Title
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    in this example, you don't even need to know stoichiometry, you really just need to know conservation of mass. If 36.7g of hydrogen are used, and they produce 328g of water, the only other component must be 291.3g of oxygen.

    • 2 years ago
  8. MarcLeclair Group Title
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    Well tis good to practice your stoich. Im just saying its very helpful for the future when you hit higher level of chem, just conservation of mass doesn't work with every problem.

    • 2 years ago
  9. jazzy12 Group Title
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    Okay, Thank you!(:

    • 2 years ago
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