3) Determine the value of the enthalpy change, AHıxn, for the following reaction using the information below.
N2O(g) + NO2(g) → 3 NO(g)
2 NO(g) → N2(g) + O2(g)
2 N2O(g) → 2 N2(g) + O2(g)
NO(g) + 1/2O2(g) → NO2(g)
AH=-181 kJ/mol
AH=-163 kJ/mol
AH = -57 kJ/mol

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

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