4) A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 72 J of heat while 35

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4 A System Undergoes A Process Consisting Of The Following Two Steps Step 1 The System Absorbs 72 J Of Heat While 35 1 (59.5 KiB) Viewed 68 times

4 A System Undergoes A Process Consisting Of The Following Two Steps Step 1 The System Absorbs 72 J Of Heat While 35 2 (59.5 KiB) Viewed 68 times

4 A System Undergoes A Process Consisting Of The Following Two Steps Step 1 The System Absorbs 72 J Of Heat While 35 3 (59.5 KiB) Viewed 68 times

4 A System Undergoes A Process Consisting Of The Following Two Steps Step 1 The System Absorbs 72 J Of Heat While 35 4 (62.35 KiB) Viewed 68 times

4) A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 72 J of heat while 35 J of work is done on it. Step 2: The system absorbs 35 J of heat while performing 72 J of work Calculate AE for the overall process. 5) A balloon filled with helium has a volume of 876 L at 1.00 atm pressure. The balloon absorbs 30.9 kJ of heat as it expands to a volume of 998 L, the pressure remaining constant. a) Calculate q, w and AE for the helium in the balloon. b) If there were 39.1 mol of helium in the balloon, calculate AE per mol of helium.
6) Suppose you place 0.0500 g of magnesium chips in a coffee cup calorimeter and then add 100.00 mL of 1.00 M HC1. The reaction that occurs is Mg (s) + 2 HC1 (aq) → H2 (g) + MgCl2 (aq) The temperature of the solution increases from 22.21 °C to 24.46 °C. Assume that the specific heat capacity of the solution is 4.20 J/g K, and the density of the HCl solution if 1.00 g/mL. a) What is the heat involved in this reaction? b) What is the enthalpy change for the reaction?