First a 500 mL beaker was filled with little temperature water and then placed on the base of the Buretrol stand. A piece of magnesium ribbon was obtained and the weights of this ribbon was taken and recorded. There after a string also a certain length was wound around this magnesium ribbon. Next 100 mL gas measuring tube was partially filled wi an approximate amount of hydrochloric acid. The rest of the gas measuring tube was completely filled with water. Thereafter the string with the magnesium ribbon was suspended inside the
In this lab experiment our main focus was to get skillful in using tools such as the metric ruler, balances, thermometer, and graduated cylinder to capture measurements of length, mass, temperature and volume. Additionally, this lab helped us to become more familiar with the uncertainty of measurements, as well as becoming efficient with rounding our measurements to the correct numbers of significant figures. Our results are measured consistently with rounding to the closest answer we could possibly acquire as the data can tell you.
Abstract: This experiment served to analyze the densities of eight different substances by placing them within a container in the order of their perceived densities. From our results, we were able to determine that there was less mass per unit of volume for the items on the upper layers of the column compared to the denser items that constituted the base. The substances were ordered in the graduated cylinder (from top to bottom) from least dense to most dense. According to our table, dish soap was denser than whole milk, but yet it floated on top. This
Then, a10µL pipette was equipped with the appropriate tip, and the volume was set to 1µL. The pipette was then immersed in the DI water and used to draw the set volume and deliver it to the weighing boat. The mass was recorded. This process was repeated for four more aliquots of 1µL of water, and the cumulative weight was recorded. After that, the weighing boat was removed from the balance, dried, placed back, and the balance was tared again to read 0g. Now the volume was set to 9µL by adjusting the micropipette knob, and 5 cumulative weights of 9µL aliquots of water were measured. The entire process was repeated for a second trial. Moreover, the 2-trial cumulative weighing process for the small and large volumes was repeated using the 100µL pipette (with 10µL for small volume and 90µL for large volume), and yet again for the 1000µL pipette (with 100µL for small volume and 900µL for large volume). Note that the disposable plastic tip was changed any time there was residual water droplets trapped inside. Finally, the temperature of the water was measured by the
For the experimental procedures I unscrewed the lids of both the polymer vial and the water vial, I poured the water rapidly into the bottle with the polymer. The water must be poured rapidly
There were multiple errors in this experiment. Originally, the method was to just measure the flask, with the balloon left untouched, each day, to see an increase in weight. However, it was realised the due to the law of conservation of mass, this method would not work. This was not realised until after the second day of experiment. Therefore the method
This experiment consists of four methods, of measuring and weighing room temperature water using the different devices, each method repeated five times. Method one is to
In experiment number two, take an Erlenmeyer flask form the shelf and place it on the workbench and close it. Then add 1.5atm of butane gas to the flask and note that the volume of the flask is 150mL (the gas occupies the entire volume of the flask.) Next take a syringe from the materials shelf and place it in the flask and record the new volume of both the flask and the syringe. After recording the data in the lab notes take the flask and place it in a constant temperature bath at 40 degrees Celsius. Record the temperature (in degrees Kelvin) and the volume of the flask added to the volume of the syringe in the lab notes. Next change the temperature of the
During the experiment, a total of two beakers were used: one that contained the hot water bath and one that held the ice water for the ice bath. Two separate graduated cylinders were used as well: one to measure and
Instead of using a 500mL volumetric flask a 1L volumetric flask was used. This made calculations that required Liters (L) easier as the numbers could be carried without doing any math. This also made the experiment more accurate. Even though the absolute uncertainty increased so did the volume of the container, this meant that
The purpose of this experiment is to determine mass, length, temperature, volume, and density of objects and liquids using common measuring devices and algebraic formulas. The metric system, the most common set of measurements used in science, which includes meters, liters, Celsius, and grams will be used.