Nitrogen in air reacts at high temperature to form no2 according to the reaction:

n2 + 2 o2 ? 2 no2

draw structures for the reactants and products indicating the number of single, double and triple bonds.

determine the ? h for the reaction using table 7.1.

[hint: one no2 has one [n-o] bond and one [n=o] bond]

a.

+115 kcal

b.

-78 kcal

c.

+78 kcal

d.

+7 kcal

e.

none of these

The correct answer is option E.

Explanation:

Structures for the reactants and products are given in an aimage ;

Number of double bonds in oxygen gas molecule = 1

Number of double bonds in nitro dioxide gas molecule = 1

Number of single bond in in nitro dioxide gas molecule = 1

Number of triple bonds in nitrogen gas molecule = 1

(pure element)

(pure element )

The enthalpy of the given reaction is 15.86 kcal.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

i have no clue hope you find the answer