Hotpack Cold Pack Lab

Hot-Pack Cold-Pack Lab Purpose: -To determine the mass of ammonium nitrate (NH4NO3) needed to cause a 15-degree temperature drop for cc ml of piddle. -To determine the mass of Calcium Chloride (CaCl2) needed to cause a 60-degree temperature rise for cc ml of water. -To calculate standard hacek enthalpy values of each compound. Procedure: The first favorable occasion that needed to be done was measure show up 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 solidity to the water. The temperature deviate was and then recorded in our nonebooks. The next thing we were say to do was empty the beaker and add a bran-new 200 mL of water to the beaker and repeat the whole process with an increase bill of the solid. However the theme did not follow this direction. The crowd 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 aggroups calculations because the initial temp changed each time new solids were place in the water.

Based on common champion and comparability other groups initial temperature, the group inflexible to change the initial temperature of each of the masses to close to what the sure initial temperature of 19 degrees. This was done to make the data meet somewhat correct. After all the data was peaceful the mode was cleaned up and the data collecting of the CaCl2 and NH4NO3. The next feel was to go to the computer lab to graph the data. Since the data was not in the be! ginning correct the graph came out wrong. kind of of graphing the final temperature with the grams, If you sine qua non to get a full essay, ordinance it on our website: BestEssayCheap.com

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