Which of the following would be a good situation in which to apply hess's law? a. when the reaction is exothermicb. when the products are unknownc. when a reaction is spontaneousd. when the hreaction is not known

The answer is D)

Apex

when the Hreaction is not known

Explanation: apex

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.