5. Compute a linear least-squares-fit of the calibration data and plot the resulting line on the same graph as the calibration data. Comment on the linearity of the pressure transducer and scannivalve. Part 3: Calibration of the Tunnel 1. Connect the micromanometer (calibrated in Part 2) across the wind-tunnel contraction in order to measure the static pressure drop.
The techniques help analyzing. Identifying, purifying, and quantifying unknown separable mixtures. Mobile phase is either a liquid or gas which moves the solvent through the stationary phase during the process. The stationary phase is a liquid or solid component that’s fixed in a place for the procedure. Paper chromatography works on capillary attractions.
Finally, we analyze the errors in both parts of the lab by propagation by substitution and compare the theoretical-experimental values using errors. III. Results: The theoretical buoyant forces for the sphere, the small cylinder, the block, and the big cylinder are 0.297N, 0.131N, 0.369N, and
This colligative property is important in many industries, but is clear to see when using ordinary salt to remove ice from steps or a driveway. The water takes salt into solution, which in turn lowers the freezing point of the water, ensuring that even sub-freezing ambient temperatures do not lead to ice buildup anywhere the salt or ice melt was applied. Experimental Procedure: Before any measurements were taken, equipment was set up and calibrated. Using Microlab’s integrated calibration file the thermistor was calibrated in order to obtain accurate temperature measurements. A graph for the data was also set up with time on the x axis in .5 second intervals and temperature on the y axis.
Ghostbuster Slime Lab 10/4/2012 Abstract The purpose of this experiment was to observe the physical properties and changes of the creation of a polymer as a result from cross-linking. A borax solution was made and was combined with a polyvinyl alcohol solution. A polymer’s cross-links give them many properties, like bonding ability, elasticity, and viscosity. The amount of water added in the experiment directly affected the viscosity and elasticity of the slime polymer. Too much water added resulted in a high viscosity and low elasticity.
Introduction: In this lab there were several purposes. Each purpose was to help further the class’s understanding of thermodynamics. Thermodynamics studies the changes in chemical and physical reactions and how energy influences those changes. The purposes of the lab were to decided which of the four given substances would make a good hot pack or cold back, to be able to design a hot pack and cold pack for specified temperature changes, to calculate the amount of heat released or absorbed by one gram of calcium chloride or ammonium nitrate, and to calculate the percentage error in the experiment. In order to understand the lab one must also understand endothermic and exothermic reactions.
Reaction of Iron Filings with an Aqueous Solution of Copper (II) Sulfate Purpose: There were many reasons that we conducted this reaction as a lab. The main objective of the lab was to observe a reaction of Iron and Copper (II) Sulfate. This lab presented a good opportunity to work with numbers using moles and Stoichiometry. This lab was also good for practice using Bunsen burners, glass, and handling hot objects. Lastly, we got to witness and test the Law of Conservation of Mass through the reaction in this experiment.
Introduction: Stoichiometry is the branch of chemistry concerned with measuring the proportions of elements that combine during chemical reactions (Bing). The mole ratio, which is the comparison of moles of a given reactant or product in an equation, is essential to the proper usage of stoichiometry. In the following experiments, stoichiometry and mole ratios were used to accurately predict and obtain missing proportions from the given equations. In the stoichiometry of a neutralization reaction experiment, the molarity and type of acid were predicted by the titration of an unknown acid using .1 molar (M) Sodium Hydroxide (NaOH). In the other, aluminum leftovers, the activity series was used to understand how and why the reaction took place and stoichiometry was used to predict the amount of aluminum that should have reacted in the following equation: 3CuCl2 * 2H2O (aq) + 2Al (s) 2AlCl3 (aq) + 3Cu (s) + 6H2O Stoichiometry’s importance in the laboratory is well defined in the results of the previously mentioned experiments.
(Use the values from Table 2.) X(experimental) range= ± m Using the corrected time of flight experimental, t23corr, and the experimental value of the launched velocity, Vmean-exp, compute the theoretical horizontal range of the projectile and its error for the chosen run. xtheo = ± m Calculate the percent difference between the theoretical and experimental horizontal range for the chosen trial. % Using the corrected time of flight, t23corr,of the projectile, compute the theoretical value of the height of the projectile and its error for the chosen run. h theor= ± m Calculate the percent difference between the theoretical and the experimental value of the height of projectile.
Whereas health is concerned more with disease causing situations. Another definer is that safety is focused on accidents that are acute (sudden and severe). Health is focused on less intense but more prolonged issues (chronic) that can cause problems through poor design. With that is mind, Zackowitz and Vredenburgh (2008) state that human factors practitioners are used to design systems and products to aid in the reduction of human errors. This is traditionally done at the early design stage, but they are often required to analyse system failures to understand why an event has occurred.