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30 August, 11:20

Trinitrotoluene (TNT), C7H5N3O6, combines explosively with oxygen to produce CO2, water, and N2. Write a balanced chemical equation for the reaction and calculate the grams of oxygen required for each 100.0 g of TNT.

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  1. 30 August, 11:24
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    We need 73.92 grams of O2 for each 100 grams TNT

    Explanation:

    Step 1: Data given

    Trinitrotoluene (TNT) = C7H5N3O6

    oxygen = O2

    Molar mass of TNT = 227.13 g/mol

    Step 2: The balanced equation

    4 C7H5N3O6 + 21O2 → 28CO2 + 10H2O + 6N2

    Step 3: Calculate moles of TNT

    Moles TNT = mass TNT / molar mass TNT

    Moles TNT = 100.0 grams / 227.13 g/mol

    Moles TNT = 0.440 moles

    Step 4: Calculate moles of O2

    For 4 moles TNT we need 21 moles of O2 to produce 28 moles CO2, 10 moles H2O and 6 moles N2

    For 0.440 moles TNT we need 21/4 * 0.440 = 2.31 moles O2

    Step 5: Calculate mass of TNT

    Mass O2 = moles O2 * molar mass O2

    Mass O2 = 2.31 moles * 32 g/mol

    Mass O2 = 73.92 grams

    We need 73.92 grams of O2 for each 100 grams TNT
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