Which of the following statements reflects the first law of thermodynamics?
A. The energy of the starting materials for a
reaction will equal the sum of energies of the
products plus energy released as heat and
disorder.
B. The amount of useable energy resulting
from a reaction will always be less than the
total energy available in the starting
materials.
C. The entropy of the products of a reaction
will always be greater than the entropy of the
starting materials.
D. The entropy of the starting materials for a
reaction will always be greater than the
entropy of the products.
Answer Key: A
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