Online Lab Submission
Students:
Instructors:
Virtual Labs:
PreLab Assignments
Interactive Animations:

Unique EndofLab Problems
Chem21Labs has the ability to create unique postlab problems in the following ways . . . .
 Student Numbers (lab data and calculations) stored in the database  any number shown on a student's webpage can be used in a postlab problem. Use your creativity to challenge students in ways not possible in the paper environment.
You reported a value of 0.0811 Latm/moleK for R using the pressure_{CO2}, volume_{CO2}, temperature_{CO2} and mass_{NaHCO3} collected in lab . . . . what mass of NaHCO_{3} would you need to start with for your experimental R to be 0.08205 Latm/moleK if the water vapor pressure was 25.1 torr (assume all the other parameters are the same as reported in your data section)?
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