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Chemistry

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If 16.9 kJ are released when 1.50 g of O2 reacts with an excess of NO, complete the thermochemical equation below.
4 NO(g) + 3 O2(g) 2 N2O5(g)
ÄHrxn=???

  • Chemistry - ,

    Wouldn't that be 16.9 kJ x (32/1.5) x 3 = ??

  • Chemistry - ,

    I worked the problem out and got 1081.6. I need the least number of significant digits..so how would i round it?

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