2. Using your data from Part II of the experiment, determine the percent water in the original unknown. Show your work.

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**Data Table for Part I**

- **Mass of unknown used:** 2.45 g
- **Mass of dry filter paper and strontium carbonate (SrCO₃):** 1.99 g
- **Mass of empty filter paper (after folding and tearing):** 0.62 g
- **Mass of strontium carbonate obtained:** 1.37 g

**Data Table for Part II**

- **Mass of crucible, lid, and unknown sample:** 29.27 g
- **Mass of empty crucible and lid:** 26.14 g
- **Mass of unknown sample used:** 3.13 g
- **Mass of crucible, lid and contents after first heating:** 28.02 g
- **Mass of crucible, lid and contents after second heating:** 28.02 g
- **Mass of crucible, lid and contents after third heating (if necessary):** [not filled]
- **Mass of crucible, lid and contents after fourth heating (if necessary):** [not filled]
- **Final mass of crucible, lid and contents after heating:** 28.02 g
- **Mass of empty crucible and lid (from above):** 26.14 g
- **Mass of residue after water loss:** 1.88 g
- **Mass of original unknown (from above):** 3.13 g
- **Mass of water contained in unknown sample:** 1.25 g

This table records the data from an experiment involving the mass of substances before and after heating to determine water content and identify strontium carbonate.
Transcribed Image Text:**Data Table for Part I** - **Mass of unknown used:** 2.45 g - **Mass of dry filter paper and strontium carbonate (SrCO₃):** 1.99 g - **Mass of empty filter paper (after folding and tearing):** 0.62 g - **Mass of strontium carbonate obtained:** 1.37 g **Data Table for Part II** - **Mass of crucible, lid, and unknown sample:** 29.27 g - **Mass of empty crucible and lid:** 26.14 g - **Mass of unknown sample used:** 3.13 g - **Mass of crucible, lid and contents after first heating:** 28.02 g - **Mass of crucible, lid and contents after second heating:** 28.02 g - **Mass of crucible, lid and contents after third heating (if necessary):** [not filled] - **Mass of crucible, lid and contents after fourth heating (if necessary):** [not filled] - **Final mass of crucible, lid and contents after heating:** 28.02 g - **Mass of empty crucible and lid (from above):** 26.14 g - **Mass of residue after water loss:** 1.88 g - **Mass of original unknown (from above):** 3.13 g - **Mass of water contained in unknown sample:** 1.25 g This table records the data from an experiment involving the mass of substances before and after heating to determine water content and identify strontium carbonate.
**Transcription:**

2. Using your data from Part II of the experiment, determine the percent water in the original unknown. Show your work.

**Explanation:**

This instruction is part of an experimental procedure where the goal is to calculate the percentage of water present in an unknown substance. The task requires using data obtained in Part II of the experiment. The instruction emphasizes the need to show all calculations performed to achieve the result, which likely involves a series of measurements and mathematical operations. Further details would depend on the specific experiment being conducted.
Transcribed Image Text:**Transcription:** 2. Using your data from Part II of the experiment, determine the percent water in the original unknown. Show your work. **Explanation:** This instruction is part of an experimental procedure where the goal is to calculate the percentage of water present in an unknown substance. The task requires using data obtained in Part II of the experiment. The instruction emphasizes the need to show all calculations performed to achieve the result, which likely involves a series of measurements and mathematical operations. Further details would depend on the specific experiment being conducted.
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