Chemistry

What volume of dioxygen is required for complete combustion of 2 volumes of acetlyene gas at NTP?

Ans is 5 volumes but I m not getting it....

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  1. Balance your mols

    2C2H2 + 5O2 --> 4CO2 + 2H2O

    PV=nRT
    n is mols
    V is volume
    P R T all the same for each

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