An expansion implies an increase in volume, therefore w must be -325 J (see the defining equation for pressure-volume work.)
If the system absorbs heat, q must be +1271. The
change in energy (internal energy) is:

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.

How does a large body of water, such as the ocean, influence climate?

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride