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1 January, 22:46

g Though wizards might be able to manage without air-bags, Muggles certainly need them! Air-bags can be inflated by the decomposition of sodium azide, NaN3. At 25.0◦C and 1.10 atm, what volume of N2 (g) is produced by the decomposition of 71.4 g NaN3 under the following chemical reaction: 2NaN3 (s) → 2Na (l) + 3N2 (g) Express your answer in liters

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  1. 1 January, 23:17
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    40.293 L

    Explanation:

    So let's count how much moles of N2 gas we will obtain.

    2NaN3 (s) → 2Na (l) + 3N2 (g)

    n (N2) = 3/2n (NaN3) = 3/2*m (NaN3) / M (NaN3) = 3/2*71.4/65.01=1.65 mol

    So now we need to use the ideal gas law to count liters.

    All numbers must be in Si system

    pV=nRT

    V = (nRT) / p

    V = (1.65*8.314*298) / 101457.5=0.040293m3=40.293 L
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