Question

Question #4 One way to limit the choices for your unknown is to consider the sign of AHSoln. Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? Trial #1 Trial #2 mass of solid mass of water. Tinitial final 5.027 g 50.0 g 21.0 °C 31.0°C 5.012 g 50.0 g 21.0 °C 30.5 °C Salt Na2CO3 KCI NH4Cl AHgoln (J/g) -267 231 305 true: Na2CO3 false: KCI false: NHACI Ok Question #5 Use your data from Table 8-3 to determine AHsoln for your unknown salt. Part 1: Enter the results of Trial #1 and Trial #2 for AH soln in the table below. If you calculate the value of AH soin as less than zero, make sure to include the negative sign. AH soln (Trial #1) -267. J/g Please check your results and recalculate if necessary. AH soln (Trial #2) J/g

Answer 1

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