12. [4pt] Sally is still having trouble with her vision from the time she added water to concentrated acid. She's doing

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12 4pt Sally Is Still Having Trouble With Her Vision From The Time She Added Water To Concentrated Acid She S Doing 1 (46.85 KiB) Viewed 32 times

12. [4pt] Sally is still having trouble with her vision from the time she added water to concentrated acid. She's doing the same experiment we are, but she can't read the equations in the lab manual because there is no Braille! Sally was hoping one of you might help her calculate AH for the two reactions she's done. Her data is as follows: Reaction B: Reaction C: Initial Temp=22C Initial Temp = 23C Final Temp = 38.2C Final Temp=26.5C Mass of MgO 0.260g Mass of Mg=0.201g - Part A. Calculate AH for Reaction B. Pay attention to the sign of AH and SHOW YOUR WORK! I Part B. Calculate AH for Reaction C. Pay attention to the sign of AH and SHOW YOUR WORK! Part C. Knowing that the heat of formation of water is -68.3 kcal/mol, calculate the AHf for MgO from Sally's data. Pay attention to the sign of AH and SHOW YOUR WORK!