Using the buret to read the volume of water is a source of random error because it is marked to the nearest 0.1mL. Therefore, our data could be above or below the actual volume of water in the buret because we took our reading to the nearest 0.01mL, which increases our uncertainty level. Along with taking our volume readings to the nearest 0.01mL, a random error also arose when we took the reading of the temperature of the water. The thermometer only read to the nearest tens places, therefore our readings went to only the tenths place which could have been measured inaccurately giving rise to more uncertainty and random error within the lab. We were able to limit our uncertainty level when taking the masses of the beaker with and without water, by using the analytical balances which read to the nearest ±0.0001g.…
4. Looking at your measurements for the volumes of water in the 10-mL and 50-mL graduated cylinders, are your values identical? Discuss at least two reasons why the measurements were not identical.…
2. Take Beaker 1 and fill it ¾ full with refrigerated water (12 degrees Celsius).…
I knew that the more water in the glass would make the Alka-Seltzer dissolve slower but the warmer temperature would speed it up a little bit.…
ABSTRACT: The objective of the experiment was to be introduced to working with the lab equipment, specifically heating and measuring, and to be able to create some of the apparatus that future experiments will require. Heating methods used were an aluminum block, a sand bath, and a water bath. The aluminum block heated most quickly while the others were more stable. Regarding the measurement of water, the less volume of water that was being transferred, the less accurate the measurement turned out to be.…
Cold water from tap (24ºC)|Ice water (5ºC)|Ice water – 5 minutes (0ºC)| 75.2 F|41 F|32 F| Data Table 3 – Mass measurements Object|Estimated Mass (g)|Actual Mass (g)| Pencil||5.8| 3 Quarters||17| 4 Dimes||9.1| 5 Pennies||12.5| Key||7.2| 2 Quarters 2 Dimes||15.9| 1 Quarter 2 Pennies 1 DIme||13| Data Table 4 – Volume measurements ||Mass A|Mass B|Mass B-A|||…
After conducting my experiment, the results have led me to the conclusion that the ice water cooled the soda the fastest. This happened because the melting ice uses energy. Though water that is in the process of freezing gives off energy, melting ice cubes absorb energy. This means that when the ice is melting, it is absorbing energy from the soda, therefore causing it to lose energy and make its molecules slow down and freeze. This is why the soda cooled the fastest in the ice water; its energy was decreasing. In the refrigerator, the soda was just sitting in cold air. The same thing happened with the freezer. In the bucket of ice, nothing was making the ice melt quickly so it wasn’t using a lot of energy. This is why the ice water cooled…
The project will involve the testing of three different water temperatures. One at hot tap water, one at cold tap water, and ice water. 1 cup of water at each temperature will be poured into the same glass, and have its temperature recorded. After doing so each water temperature will go through five trials with one Alka-Seltzer tablet being dropped into the glass each time, recording how long it takes for the tablet to dissolve.…
We rinsed all glassware three times with deionized water then we chilled 200mL of deionized water with ice and heated 200mL of deionized water on a hot plate. We measured out 50.0mL of chilled deionized water into a graduated cylinder. We measured and recorded the mass of the empty calorimeter, and then we added the 50.0mL of chilled deionized water and recorded the mass of the calorimeter with the chilled deionized water. We added the magnetic stirrer to the calorimeter and turned on the stirrer to a slow stirring rate. We placed a temperature probe in the calorimeter and placed the lid on the calorimeter. We then measured out 50.0mL of heated deionized water into a graduated cylinder and placed a temperature probe in the graduated cylinder. We recorded the initial temperatures of the chilled and heated deionized water. We added the heated…
Can hot water freeze faster than cold water.I think that the temperature will change throughout the experiment at points I think the temperature will get colder than the water's temperature.The water in both cups will have different times that they will be the same temperature as the air around it.This is when you would…
I was surprised that the Yeti and the coozie started off at different temperatures. It is surprising to me because I placed both bottles of water beside each other and in the refrigerator at the same time. I am surprised to see that the coozie took 23 hours to get to its highest temperature, I predicted that it would happen in three hours. I am also surprised that it only took a matter of minutes for the coozie to start warming up. I think that it is interesting that all of my comparisons between the Yeti and the coozie were true, but that the temperature difference was so close together at the end of the 24 hour period.…
i) Ice cream melts faster on a warm summer day than on a cold winter day.…
Experiencing grief is like jumping into freezing, ice cold water. Grieving is a strong, overwhelming feeling that is completely resistless; it is a universal state and a powerful personal experience. In the same way, jumping into ice cold water is overpowering as the iciness of the water hits hard. Whether it is caused by the death of a loved one, the ending of a serious relationship, or even a job loss, grief causes a never-ending, emotional pain to an individual that cannot be controlled. The everlasting pain is also experienced when jumping into freezing water. The harsh and severe impact of the freezing water sends disturbing thrills to one's body. Once immersed and engulfed in the icy cold water, it feels as if you are trapped and helpless;…
3. A beaker containing 100 ml of water is heated at a constant rate for 10 minutes. The temperature of the liquid is…
Convection is an important way to cool a bowl of soup because the hot soup heats the layer of air that is surrounding the bowl. The layer rises because it is hotter than the surrounding air and cold air takes the place of the hot rising air. When you blow on a bowl of soup this cycle will repeat. Conduction is the 2nd most important…