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I have already balanced - 2C2H2+5O2->4CO2+2H2O what do I do next?

2 moles acetylene--------------5 moles oxygen O2

7 moles acetylene--------------x moles oxygen O2

x = 7 x 5/2 = 17,5

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8y ago
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8y ago

The reaction is:
2 C2H2 + 5 O2 = 4 CO2 + 2H2O
We need 17,5 moles oxygen.

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Q: How many mols of O2 are needed to completely react with 7 mols of C2H2?
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