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When solving for the final temperature, I used q=nC(Tf-Ti). Since we are using liquid water's specific heat capacity, 4.184 J/C*g would be plugged in for C, however in the solutions manual, it is negative. Why would it be negative in this case?
When you say "it" lost heat, what exactly do you mean? The system lost heat to the surroundings? Since our delta H value for 1 mol of zinc was -20kJ, this means the reaction is exothermic and gives off heat to the surroundings. So does this mean that in an exothermic reaction, the Cs value will always be switched to negative???
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