What is the heat of reaction for the process described in (a)? Hint: Apply Hess's law using the data in (b). (A P E X pre-lab 3.4.3)

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Which change to the system wood cause the freely-moving piston to lower?

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above