2. Find D E for an exothermic reaction in which 12 kJ of heat flows and where 3400 J of work is done on the system.
-8.6 kJ 8.6 kJ 15.4 kJ -15.4 kJ none of the above
3. Which statement is FALSE?
extensive properties depend directly on the amount of substance temperature is an extensive property intensive properties do not depend on the amount of substance mass is an extensive property all statements are true
4. Which of the following is NOT a conventional definition of standard states?
the standard state of a gaseous substance is a pressure of 1 atm for a substance in a solution, the standard state is a concentration of 1 M for a pure substance in a condensed state, the standard state is the pure liquid or solid for a liquid, the standard state is STP for an element, the standard state is the form in which the element exists under 1atm and 25°C
5. Which of the following do NOT contribute to the formation of coal?
bones plants computer chip a humpback whale a banana peel
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