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Unformatted text preview: calculate results in the experiments. 5. The heat capacity of water is 1 cal/gC. How much energy is needed to increase the temperature of a gram of water 1C? How much energy is needed to heat 100g of water by 100C? 4.18 J/1 cal; 100 cal/gC 6. Solvation of an acid heats water up; for example, HCL(l) + H20(l) H+(aq) + CL-(aq) Do the products or reactants have more enthalpy? To where did the energy from the reaction flow? Reactants have more enthalpy and the energy flowed into the surroundings. 7. What does a negative q and positive q mean in calorimetry? Negative change of enthalpy which means an exothermic reaction and a positive change of enthalpy means that an endothermic reaction occurred. 8. If you put 25g of a substance at 25C into a calorimeter with 85g of the same substance at 85C, what is the final temperature of the mixture if the calorimeter has zero heat capacity? 60C is the final temperature of the mixture if the calorimeter has a zero heat capacity....
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This lab report was uploaded on 04/09/2008 for the course CHEM 1M taught by Professor Roland during the Winter '08 term at University of California, Santa Cruz.
- Winter '08