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Cell Volume Lab Essay

536 words - 2 pages

Method and Materials:We calibrated the conductivity sensor by measuring the conductivity when distilled water and 1.1% NaCl (338mOsm/kg) is added. We made sure that the conductivity probe correctly attached to the right insert on the SW500 Interface which is connected to the computer.We took small beaker to the front of the room and we filled it ¾ full with the prepared solution. We opened "Lab Group" folder. We then opened "Laboratory 2" folder. We clicked on the sensor. We then opened the calibration section of the program. We placed the conductivity probe first into distilled water and then we pressed "take reading". We inserted the concentration of distilled water in the table as 0mosm.We opened the program for laboratory 2. We placed the probe in one of the 12 solutions. We started recording by activating the start button. We continued recording until the readings are stable then we clicked the "stop" button. We used the "smart tool" to read the condutivity value and then we entered the data in the table.We removed the conductivity sensor from the beaker and then we shaked the sensor off. We made similar measurements of the remaining 12 NaCl solutions, and then we entered the data into the data table in the row labeled conductivity. We saved the data file in our own group data folder. Next, we determined the osmolality of each of the 12 solutionsWe prepared test solutions; we used red grease pencil to label the 12 test tubes from 1 to 11. We marked the last test tube with a letter "C" refers...

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