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wolfgirl

In the equation ___CH4 + ___O2 ___CO2 + ___H2O, what number will go in front of the H2O to balance the equation?

  • 2 years ago
  • 2 years ago

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  1. online334
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    idk that is hard lol

    • 2 years ago
  2. JamesJ
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    I guess what you mean is ___CH4 + ___O2 --> ___CO2 + ___H2O is that right?

    • 2 years ago
  3. wolfgirl
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    yes

    • 2 years ago
  4. online334
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    yeah i was going tay what james said

    • 2 years ago
  5. online334
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    lol

    • 2 years ago
  6. online334
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    hi james it is snowball

    • 2 years ago
  7. online334
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    i got banned made another acount thoe

    • 2 years ago
  8. JamesJ
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    well the number of atoms of each element has to balance on both sides. So if we start with one CH4 atom, we must have one CO2 atom: 1 CH4 + ___O2 --> 1 CO2 + ___H2O Now, what can you say about the other two atoms? (Hi online/snowball)

    • 2 years ago
  9. online334
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    hi james

    • 2 years ago
  10. wolfgirl
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    that there are a 2 of them

    • 2 years ago
  11. online334
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    yeah

    • 2 years ago
  12. JamesJ
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    Did you see why with one CH4 molecule there must be one CO2 molecule? That is because with one CH4 molecule, there is only one carbon atom on the left-hand side. So there must only be one carbon atom on the right-hand side.

    • 2 years ago
  13. wolfgirl
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    ok. I understand

    • 2 years ago
  14. online334
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    good

    • 2 years ago
  15. JamesJ
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    So right now we have that 1 CH4 + ___O2 --> 1 CO2 + ___H2O Now, given that, how many hydrogen atoms must there be on the RHS (right hand side)?

    • 2 years ago
  16. wolfgirl
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    4?

    • 2 years ago
  17. JamesJ
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    Yes. And hence how many water molecules H2O must there be?

    • 2 years ago
  18. wolfgirl
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    4

    • 2 years ago
  19. JamesJ
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    No. Each water molecule has two hydrogen atoms, that's why we write H2O and not HO

    • 2 years ago
  20. wolfgirl
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    so it's 2?

    • 2 years ago
  21. online334
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    yes

    • 2 years ago
  22. JamesJ
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    Yes. Hence we now have that 1 CH4 + ___O2 --> 1 CO2 + 2 H2O Now, count up the oxygen atoms on the RHS and figure out how many O2 molecules we need on the LHS.

    • 2 years ago
  23. wolfgirl
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    2

    • 2 years ago
  24. online334
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    omh lhs iw my highschool i use to go to

    • 2 years ago
  25. JamesJ
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    right. So the final answer is 1 CH4 + 2 O2 --> 1 CO2 + 2 H2O

    • 2 years ago
  26. wolfgirl
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    ok thank you

    • 2 years ago
  27. online334
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    no problem

    • 2 years ago
  28. JamesJ
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    You can see that there are some more questions like this here; scroll down a bit. You might find it useful to have a look at them.

    • 2 years ago
  29. wolfgirl
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    ok. I will

    • 2 years ago
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