Thermometer Procedure: Fill the three beaker with water. - Beaker #1 will be filled with ice cold water (4c). - Beaker #2 will be filled with water at a room temperature (20c). - Beaker #3 will be filled with hot water (75c). Place a magnetic stirrer in each beaker.
After seeing this data the two most effective look chemical at resisting energy was CaCl2 and LiCl. So we looked at the price of both of this chemical CaCl2 cost 6.55$ per 500g and LiCl cost 32.75$ per 500g because CaCl2 was substantially cheaper we decide to chose it to use in own hand warmer. We calculated that it would take 22g of CaCl2 to create a 20oC increase in temperature of 100ml of water. Some sources of error in this lab, would be heat escape from not be able to replace the lid of the calorement went adding chemical into it, inaccuracies in the balance, and not waiting of the proper time to recode the
Fill beaker with water Use the disposable pipette to place water in the graduated cylinder until the unidentified object would be completely submerged in water Record what the measurement of water in milliliters before placing the unidentified object into the graduated cylinder Gently place the unidentified object into the graduated cylinder Record the measurement of the water in milliliters after placing the unidentified object into the graduated cylinder Subtract the measurement of water in milliliters before placing the unidentified object into the graduated cylinder from the measurement of the water in milliliters after placing the unidentified object into the graduated cylinder, this is the volume of the unidentified object Record the volume (the answer you got in step 10) of the unidentified object in the data table Weigh the unidentified object on the scale, this is the mass of the unidentified object Record that number in the data table Calculate the density of the object by dividing the mass by the volume and rounding it to the proper significant figure, Record the density of the unidentified object in the data table Repeat the lab 2 more times and with each experiment record the data in the chart under the correct trial number corresponding with the correct
Modifications of this procedure include the use of hot plates instead of Bunsen burners, and heating t-butyl alcohol to 60-65 ℃ instead of 50 ℃. Other modifications include the use of weighing boats to measure an amount of unknown instead of weighing paper, and completing one run of unknown 2 instead of two runs of unknown 2. Summary of
We started by putting 100 mL of water into a coffee cup calorimeter (a polystyrene cup inside another polystyrene cup as an insulator), a magnetic stir bar was added and using the program LabProTM the
An area was chosen along the stream where the water was moving quickly, and our teachers were careful not to stir up sediment. The bottle was then submerged in water with no way for air to get in, and once filled they used the lid to seal it. The temperature of the water was gained by placing a thermometer in the same area the sample was taken from and was left there for one minute while results were recorded. Water samples can also be used within the hour, or placed in the refrigerator until use. Testing in class was difficult, but with a few attempts we were able to conduct
For this experiment, the materials needed include an
the triple beam balance scale to measure the mass of the cup and the jar 3.Mix sugar and water in a beaker 4.Place the mixed solution onto a hotplate 5.Stir the solution 6.After stirring measure the temperature of the solution 7.Create a cross with
Measure out 0.035 - 0.045g of magnesium ribbon and tie a string to it and record the mass of the ribbon. Pour 6 mL of HCl into the eudiometer. Carefully pour 50-60 mL of distilled water to fill up the rest of the eudiometer.
Materials and Methods The chemicals used to perform this experiment were distilled water, sodium chloride (NaCl), ice,
To do the temperature and dissolved oxygen tests, stick the probe in the water, and it will show numbers. One will be the dissolved oxygen in ppm (parts per million) and the other will be the temperature of the water. To do the pH test, stick the pH paper in the water and compare the color it turns to the scale. To test nitrates, put clear water in a container and dirty water in another, and put powder in them. Shake them and then compare the color they turn to the scale.
Procedures - 1) Pour water into cups. 2) Measure and record the temperature. 3)
31. Add dry ice (solid CO2) to distilled water. 32. Measure pH of the solution containing distilled water and dry ice. 33.
In question one of Artifact PART 1 (Is the mug worth it or not?) there is two given options. Option A: Have starbucks workers put a drink of your choice in a Starbucks Cup. Option B: Purchase a Mug and have starbucks put your drink of choice into Your Mug. After my research and calculations I have found a and proven a few things.
This experiment has to be carried out carefully
