Hotpack Cold Pack Lab

Hot-Pack Cold-Pack Lab Purpose: -To determine the mass of ammonium treat (NH4NO3) needed to cause a 15-degree temperature drop for cc ml of urine. -To determine the mass of Calcium Chloride (CaCl2) needed to cause a 60-degree temperature rise for two hundred ml of water. -To calculate standard wedge shape enthalpy values of each compound. Procedure: The first neighborly occasion that needed to be done was measure off 200 mL of water and added it to the beaker. Next the initial temperature of the water was interpreted which turned out o be 19 degrees Celsius. The attached thing that was done was to add the 5g of the significant to the water. The temperature channelise was and then recorded in our nonebooks. The next thing we were vatic to do was empty the beaker and add a unseasoned 200 mL of water to the beaker and repeat the whole process with an change magnitude bill of the solid. However the multitude did not follow this direction. The concourse did not empty out the water and added more of the solid to the current solid that was in the beaker. This action threw off the collections calculations because the initial temp changed each time new solids were place in the water.

Based on common finger and comparability other groups initial temperature, the group inflexible to change the initial temperature of each of the masses to almost what the sure initial temperature of 19 degrees. This was done to make the info meet somewhat correct. After all the data was accumulate the mode was cleaned up and the data collecting of the CaCl2 and NH4NO3. The next flavo ur was to go to the computer lab to graph th! e data. Since the data was not in the beginning correct the graph came out wrong. alternatively of graphing the final temperature with the grams, If you sine qua non to get a full essay, social club it on our website: BestEssayCheap.com

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