The data was then graphed and the slope of the line of best fit for the data points was found. The slope of the line of best fit for each treatment was determined and represented
In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet. It is my belief that Alka-Seltzer
First, the 250-mL graduated cylinder, 100-mL graduated cylinder, and the 10-mL graduated cylinder were observed to see the volume of the liquid in each one. Then, one digit further was estimated, and the results were recorded. After that, the 25-mL graduated cylinder and the 50-mL beaker were cleaned and dried. Next, their masses were measured on the scale, and the results were rounded to the nearest thousands decimal place. Subsequently, the Erlenmeyer flask was filled with 100 mL of distilled water.
Table 1.2 Roses 3 6 9 12 15 Peonies 5 10 15 20 25 Table 1.3 Peonies 2 4 6 8 10 Carnations 5 10 15 20 25 We decided to find the ratio between peonies and daisies first because we were given ratios for each of them to carnations (table 1.1 and 1.3). In order to do this we compared the two tables of carnations to daisies (table 1.1) and peonies to carnations (table 1.3).
Apply 5.2 Display quantitative data with appropriate descriptive statistics (mean, SE) on a graph. Paste your graph here. 5) Apply 5.3: Display quantitative data with p-values for differences between means. Apply 5.4: Understand what statistical differences between means indicate. Report your plankton means ± 2SE with the p-value for comparing those means.
Once the 24-hour period has passed then you will extract the shells from the vinegar beaker and record the mass of those shells and the shells that were not exposed to the vinegar. Record all data and observations on the chart labeling the vinegar shells “experimental” and the other two “control”. Then you will pour 100 ml of vinegar into a 500 ml beaker and 100 ml of salt water in the other 500 ml beaker. Set the timer to 30 minutes and drop one “control” and one “experimental” shell to each beaker at the same time. In your data table you will record the observations of what is happens to the shells while they are exposed to vinegar and the salt water every 5 minutes.
While heat is added at a constant rate, temperature readings will be made until the substance is in its liquid phase at a temperature well above its melting point. The data collected in Parts I and II will be used to construct a graph, which will consist of two curved lines - a cooling curve and a heating curve. When completed, the graph will show pictorially what happens to a pure substance as its temperature is raised and lowered over a temperature interval that includes its freezing and melting points. The graph will also show how the freezing and melting points of a substance are
When temperature is increased, the amount of obtainable energy increases; meaning that particles will move at faster pace at a higher temperature. Thus rate at which molecules diffuse will progressively speed up as the temperature increases. However if temperature of solution is decreased the rate of osmosis will decrease and rate at which molecules diffuse will be significantly less than that of higher
We can think of each fraction as 1 unit cut into ten equal size pieces. In one unit we would shade 8 of the 10 pieces to represent 8/10 and we would shade 9 out of the 10 pieces on the other unit, because we can see that the second unit has 9 out of the 10 pieces shaded we know that 9/10 is the larger fraction. Benchmark 7/13 and 11/23 are best compared through the benchmarking strategy. We are going to use ½ as our benchmark for these two fractions. First we need to divide each of the denominators by 2 to get 6.5 and 11.5 respectively.
This indicates the evidence of various random and systematic errors, as there is scatter found within the graph. Percentage difference could also be calculated by , where TTH is the temperature theory and TM is the temperature measured. Percentage difference for temperature after 30 minutes could
The mixture was then distilled. When the temperature was reached to about 59℃, half vial of distillate (1V) and 1 mL of the liquid residue (1L) were collected. For 61.0℃, the distillation was then continued. Samples (2V, 2L) were taken at about 61.0℃.
The fractions in the fractional distillation such as N-hexane, isohexane, methyl cyclopentane have normal boiling point close to cyclohexane which makes the recovery of cyclohexane uneconomic and difficult. 2. Quantity of cyclohexane recovered is not enough to meet the current demand since the cyclohexane content of naphtha is about 5%- 15% by weight .3 Selection of Pathway to Cyclohexane (2) Hydrogenation of Benzene: C6H6 +3H2 →
Rediet Legese iLab Week # 6 CRUDE OIL DISTILLATION Introduction: The aim of this week lab experiment is to experiment distill crude oil and to check how temperature determine the chemical properties of crude oil plus how the boiling point can also show physical properties. They are two major finding in this experiment. he first finding was the point at which the raw petroleum is heated to the point of boiling, at 275 0C, the gas and kerosene oil are refined, however the oil (lubricant ) stays as an unrefined feature oil.
Using these new measurements will give the same outcome as the 50mL of tap water and 25mL of hot water as stated in the hypothesis. However, we redid our experiment and tested the water ratio with 60mL to 30mL and found the same answer of 65ºC. The data shows both water ratios do in fact give the same result making this procedure accurate and can allow the experimenter to find the right temperature of the hot water. My lab partner and I learned that by finding the initial and final water temperatures within our experiment, we were allowed to use a simple equation which could get us our answer. We figured out how to use the equation -q(exo)=q(endo) more efficiently and were able to understand its function
What is fractional distillation? Fractional distillation is a method of separating miscible liquids using heat. This technique is used for the separation of liquids which dissolve in each other. Several simple distillations are completed during fractional distillation using only one apparatus.
