Using the following data PLEASE answer, with detail, questions 3, 4, 5, 6, 7, an
ID: 1551905 • Letter: U
Question
Using the following data PLEASE answer, with detail, questions 3, 4, 5, 6, 7, and 8. Thank you so much!
Procedure 1) Switch the Ohaus balance ON with no object on its pan. Push ON/Zero once more, to make sure that the scale is properly zeroed. (2) Measure and RECORD the mass of each metal piece. Measure and RECORD the mass mcup of the calorimeter cup. (3) Fill a 600 mL beaker halfway with water. Add 5 6 Holding each metal piece by the attached the ice-water string, submerge the three samples in mixture. You want the ice to be but not touching the metals. This will allow the metals to come to a uniform temperature. Try to keep as much of the string as possible out of the water. Insert a thermometer and let the mixture reach an equilibrium temperature of about 5oC. RECORD this temperature as T .metal (4) Use the kettle to heat about 500 ml of water to about 55oC, but no hotter (notice that the heating will happens rather fast. about 90 ml water to the calorimeter cup (125 ml for the very large sample). There should be enough water to just cover the sample (see note on the previous page). Use the Ohaus balance to measure the mass of the cup with water. R this value as mcup+water. (5) Slide the temperature sensor through the outside hole in lid of the calorimeter. Insert the the sensor into the water, but leave the lid rotated around, so that it does not cover the cup.Explanation / Answer
Possible causes:
Heat lost to the environment
Incorrect reading of thermometer
Increase in heat energy due to stirring
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