Lab Session 11, Experiment 10: Determination of the Molar 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering your name and partner's name at the top of the form. This personalizes your report and ensures proper attribution.
3. In section 10A, record all measurements as you conduct the experiment. Fill in the mass of the test tube and contents before and after heating in fields (a) and (b).
4. Calculate the mass of oxygen generated by subtracting the mass after heating from that before heating, and enter this value in field (c).
5. Measure and input the volume of water transferred, which equals the volume of O2 produced, into field (d). Ensure you also note the temperature of water in field (e).
6. Refer to the vapor pressure table provided in your document to find and enter values for barometric pressure and vapor pressure of water in fields (f) and (g), respectively.
7. Calculate the pressure of dry oxygen by subtracting vapor pressure from barometric pressure, then input this result into field (h).
8. Finally, use these values to calculate molar mass in field (i) using the ideal gas law formula provided. Don’t forget to compute % error in field (j).

Start editing your Lab Session report today for free on our platform!