Snow Day Labs

Universities that may have classes cancelled due to weather have used the random number feature in Chem21Labs to "generate" lab data. Two approaches have been used:

1. Create a Duplicate Lab- the "original" is copied and the "random data" appears in all the places where lab data is normally entered by the student.
2. Hide the random numbers under a More Information link - labs that are assigned during weeks where inclement weather is likely are modified so they always contain a "set" of random data. This data is "hidden" under a More Information link with text to describe the purpose of the data. Click the link below to display the student view of a Snow Day Lab.
   
   

   If your lab was cancelled, your lab instructor is authorizing the use of the lab data below. This data is unique to you, do not use another student's data. Enter the data below exactly as shown as the lab data for this lab.

   
   Mass of KHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1206 g
   Initial volume of strong acid . . . . . . . . . . . . . . . . . . . . 5.01 mL
   Volume of water added to cover the pH probe . . . . . 67.71 mL
   Initial pH (strong acid) . . . . . . . . . . . . . . . . . . . . . . . . . 2.06
   Initial volume of acetic acid . . . . . . . . . . . . . . . . . . . . . 5.03 mL
   Volume of water added to cover the pH probe . . . . . 63.30 mL
   Initial pH (weak acid) . . . . . . . . . . . . . . . . . . . . . . . . . . 3.33