A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston cylinc The temperature of the water bath is monitored, and it is determined from this data that 163. kJ of heat flows into the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 300. kJ of work on the system during the reaction. gases Is the reaction exothermic or endothermic? O exothermic O endothermic O up Does the temperature of the water bath go up or down? X. down neither O in Does the piston move in or out? O out O neither O absorb Does the reaction absorb or release energy? O release O neither How much energy does the reaction absorb or release? Round your answer to 3 significant digits. OO OOOO0 0 O

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Chapter1: Chemical Foundations
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**Transcription for Educational Purposes**

---

A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.)

**Description of Diagram:**

The diagram illustrates a setup with a cylinder containing gases. The cylinder is submerged in a water bath, and a piston maintains a constant pressure of 1 atm on the gases inside. A thermometer is visible, indicating the temperature of the water bath.

**Experiment Data:**

The temperature of the water bath is monitored, and it is determined from this data that 163 kJ of heat flows into the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 300 kJ of work on the system during the reaction.

**Questions:**

1. **Is the reaction exothermic or endothermic?**
   - [ ] exothermic
   - [✔] endothermic

2. **Does the temperature of the water bath go up or down?**
   - [ ] up
   - [✔] down
   - [ ] neither

3. **Does the piston move in or out?**
   - [ ] in
   - [✔] out
   - [ ] neither

4. **Does the reaction absorb or release energy?**
   - [✔] absorb
   - [ ] release
   - [ ] neither

5. **How much energy does the reaction absorb or release?** Round your answer to 3 significant digits.

   Answer: _______ kJ

---

This transcription highlights the experimental procedure, observations, and related questions for understanding the thermodynamic behavior of the reaction occurring within the setup.
Transcribed Image Text:**Transcription for Educational Purposes** --- A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) **Description of Diagram:** The diagram illustrates a setup with a cylinder containing gases. The cylinder is submerged in a water bath, and a piston maintains a constant pressure of 1 atm on the gases inside. A thermometer is visible, indicating the temperature of the water bath. **Experiment Data:** The temperature of the water bath is monitored, and it is determined from this data that 163 kJ of heat flows into the system during the reaction. The position of the piston is also monitored, and it is determined from this data that the piston does 300 kJ of work on the system during the reaction. **Questions:** 1. **Is the reaction exothermic or endothermic?** - [ ] exothermic - [✔] endothermic 2. **Does the temperature of the water bath go up or down?** - [ ] up - [✔] down - [ ] neither 3. **Does the piston move in or out?** - [ ] in - [✔] out - [ ] neither 4. **Does the reaction absorb or release energy?** - [✔] absorb - [ ] release - [ ] neither 5. **How much energy does the reaction absorb or release?** Round your answer to 3 significant digits. Answer: _______ kJ --- This transcription highlights the experimental procedure, observations, and related questions for understanding the thermodynamic behavior of the reaction occurring within the setup.
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