In the next steps the density of water between 30-40 °C, 40-50 °C and 50-60 °C was measured. Then our results ρ vs T and also density vs temperature values given in the Steam Tables were plotted on the same graph in order to compare. In the second part the density of water was measured by density bottle. The densities obtained from the experiment are 995, 992.5, 991, 990 kg/m3 for the first part and
Written by Elijah Batchelder Reaction Order and Rate Laws 03.24.2017 Lab Partner: Jackson Mendenhall Lab Instructor: Nicole Capps Introduction In the following lab experiment, reactions will be induced in order to experimentally determine both the rate laws and the reaction orders of hydrochloric acid and sodium thiosulfate in the synthesis of the two solutions. A rate law is an equation which can tell you how fast a reaction will take place, dependent on the concentrations of each solution involved. A reaction order, usually described as either zeroth, first, or second order, gives the magnitude of variance when the concentration of a solution changes. This lab will cultivate a deeper understanding of these concepts, as well
The mesh is created using the default values for this problem as specified in the manual . First layer height is set to 0.0001m. By pressing the update button a mesh is now formed on the geometry. The final step of the analysis is to define the setup including the inputs and outputs of the system. For models the setting is set as viscous and laminar flow.
Introduction The goal of this experiment was to acquire an understanding of the fundamentals of measurement in addition to analyzing the gathered data. During the experiment, an understanding of basic experimental error was gained as well as how to utilize the error equations to account for margins of error in each experiment. For Investigation 1, the mass, length and diameter of four separate cylinders was measured and utilized to calculate the volume and density of the cylinders. After recording these results in the table, the data of the cylinders was graphed. Then, in Investigation 2, a Geiger counter was utilized to measure background radiation in the lab at intervals of one minute for sixty minutes.
Place delivery tube in the bucket of water then into the water filled graduated cylinder (delivery tube should be approximately 5-10cm up the graduated cylinder) 10. Attach the end of the delivery tube, that is not in the bucket, to the hole of the cork 11. Pour the 50ml of HCL that you have measured, into the conical flask 12. As soon as all of HCL is poured into the conical flask, begin the stop watch, and close the top if the conical flask with the cork tightly 13. Measure rate of CO2 produced in the upside down 250 graduated cylinder (you will see that the water levels begin to decrease from the top of the cylinder.
Table 1.A was constructed in order to represent the resultant amounts of NaOH that were used and their respective time that they were added, as well as the amounts of sample and acetone that were mixed, and Calculations 1.A shows the calculations used to find the concentrations of HCl at different times, which is needed for the calculation of the rate constant. Graph 1.A represents the plot of kinetic data from the recorded results seen in this experiment, and this graph also includes the calculated slope, which is used
Now we place into the Erlenmeyer flask filled with Na2SO3 (aq), 30ml of 0.3 mol/L solution of HCl. 6. Right after mixing the two solutions, we quickly put the cap on the flask so that all of the gas produced is transferred through the glass tubes into the measuring cylinder. 7. After we see that the reaction is complete, we can read the measurements from the thermometer, pressure gauge and measuring cylinder to get the mass, temperature and pressure which we will need for later calculations.
When the bubbling comes to an end, stop the stopwatch, and annotate your results. For the second trial, measure again 1.00M of hydrochloric acid into the second graduated cylinder. Then enter the second 3cm magnesium strip, only though this time break it into smaller pieces. By this you will be creating a larger surface area. When it starts reacting start the stopwatch until it stops reacting.
Ve = L* (A1+A2)/2 Case II: One cross section in cut (or fill) the following in fill (or cut). For this case first find the distance where the cut (or fill ends and fill starts using the following approximation). Station (0+100) Elevation 10 20 30 40 50 60 4 x = A1L/ (A1+A2) Then you can calculate the volume of cut and fill as follows: Cut = A1 x/2 and Fill = A2 (L-x)/2 Using these volumes prepare a table as given on the attached table (use metric measures). This table is used in preparation of what is known as, mass diagram. Notice that embankment volumes are adjusted to excavation volumes dividing by swell or shrinkage factors because when earth is excavated its volume change.