Given the following equation and bond energies, determine which statement is true. n2 + o2 → 2no n-n triple bond: 941 kj/mol o-o double bond: 495 kj/mol n-o bond: 201 kj/mol
a. a nitrogen-oxygen bond is broken.
b. the reaction is exothermic.
c. the products have more energy than the reactants.
d. a triple bond between nitrogen atoms is formed.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

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