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

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases