Exhibit 15.2
The following questions employ the AON network and completed spreadsheet below. 
-Refer to Exhibit 15.2. Which of the following activities is not on the critical path for the network?
Definitions:
Osmole
A unit of measurement for the number of particles that contribute to the osmotic pressure of a solution.
Solute
A substance dissolved in another substance, typically the component of a solution present in the lesser amount.
Normal Blood pH
The typical pH range of human blood, which is tightly regulated to stay between 7.35 and 7.45.
Blood pH
The measure of acidity or alkalinity of the blood, normally maintained within a tightly regulated range of about 7.35 to 7.45.
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