# AP Chemistry

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Calculate the standard entropy change for the dimerization of NO2: 2NO2(g)→N2O4(g)at 298 K, if
S◦ ∆H◦f J/K·mol
NO2(g) 240.06 33.18
N2O4(g) 304.29 9.16

• AP Chemistry -

• AP Chemistry -

dg4354
2242342

1111

• AP Chemistry -

-175.8 j/k.mol

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