AP Chemistry Scoring Guidelines 2017 - College Board

2017

AP Chemistry

Scoring Guidelines

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PV

0.40 atm ? 25.0 L

RT 0.08206 (L ? atm)/(mol ? K) ? 393 K

0.31 mol Cl2 ?

1 mol CS2 3 mol Cl2

?

76.13 g CS2 1 mol CS2

= 7.9 g CS2

S(enthalpies of bonds broken) - S(enthalpies of bonds formed)

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