Consider the reaction: ca(oh)2 (s) → cao (s) + h2o (l), δhorxn= 65. 2 kj/mol. What is the enthalpy of formation of cao(s)?.

Of the 168 hours in a week as a full time student you should spend how many hours per week on school work?

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.