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1. In an exothermic reaction
heat flows into the system heat flows into the surrounding heat flows into both the surrounding and system no heat is involved none of the above

2. 300. J of energy was released by solution A in a calorimeter. If the mass of solution A was 50.g and the T was 30.C, what is its specific heat capacity.
.20 J/C*g 20 J/C*g 1.2 J/C*g .7 J/C*g none of the above

3. Which of the following do NOT contribute to the formation of coal?
bones plants computer chip a humpback whale a banana peel

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 25C

5. After substance A was added to a beaker of water, the water temperature decreased. Which statement explains this phenomenon?
this process was exothermic and required hear from water substance was endothermic and required heat from water substance A caused the water to boil the water molecules moved faster none of the above

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