Calibration Lab

In experiment A the results from the precipitation of CaC2O4 H2O from the salt mixture were obtained by weighing the items listed on Table 1 on a scale.

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

Then 8.0g of copper sulfate crystals were placed inside the beaker and the mass was recorded for the actual crystals. 50 mL of water was added to the beaker with the crystals. The ring stand was set up with the wire mesh on it and one partner should place the mixture in the beaker on it should be heated without letting the mixture boil. Stir the mixture and heat until the crystals are dissolved. While one partner does this, the other should obtain 1.5g of iron filings in a measuring cup and records the mass. Then the iron filings should be added small amounts at a time to the heated solution. Stir continuously until all the mixture is added to the beaker. Then it sat for 10 minutes and observations were recorded. Record the mass of a filter paper and set up a filtration apparatus with the filter paper in a funnel over an Erlenmeyer flask. Decant the liquid through the paper slowly trying not to allow any solid to get on the filter paper. Then with de-ionized water, rinse your solid in the beaker and let the solid settle then decant the liquid. Repeat the washing twice more and in the last time guide all the solid into the filter paper. Then place the filter paper on a watch glass and then into a warm oven to dry. After it is cool, record the mass of the watch glass, filter paper and solid. If there is not enough time to cool, you may have to do it the next

The purpose of the lab was to mimic the way Mendeleev placed the elements on the periodic table. Mendeleev was a Russian chemist who produced the first orderly periodic table. Frist, the way the periodic table has been classed alongside the atomic sum and the elements with related properties. Second, the objectives are observeing the physical states of common elements, and the progression of the periodic table, lastly speculate by determining the unknown elements established on the observed progression. As a group we tried to find out where the unknown elements should be placed. Finnly, the information that was given to help us with our process was the state, density, hardness, conductivity, melting point, and color.

Abstract: The objective of the lab is to determine the volumes of the polystyrene spheres with three different measuring tools: Water Displacement, Analytical Scale, and Triple Beam Balance Scale. The experiment is meant to help understand the concept and application of precision and accuracy in experimental measurements. Accuracy is a measure of how closely the results of repeated measurements are to the true value of what is being measured. Precision is the variability in the results from the repeated measurements, and how close the repeated measurements were to one another. In this lab, the method for measuring the volume of the polystyrene spheres is done with the previously stated tools: Water Displacement, Analytical Scale, and Triple Beam Balance Scale. The standard deviation for the entire classes volumes and masses are recorded to determine the densities.

In the fourth stage of this experiment, the density of a gas was determined. A 250ml flask was weighed with an empty rubber balloon and the mass was recorded.

The Lab One was done on Laboratory Techniques and Measurements. The first experiment with my Lab partner; we got opportunity to experiment how to conduct measurements in length by using metric conversion. We started in cm units and changed into mm by x10, and moving decimal point x1 to right. To find in meter we moved from cm to meter two decimal points to the left or double check our self divided by 100 and all records in data table 1. The second experiment was to measure temperature of how cold and hot tap water can be by using thermometer in Celsius units. From this experiment, gained knowledge that tab water doesn’t boil to 100 Celsius related to containing different

The experiment had two part, each part consisted of two trails and each two team members did one trail simultaneously. The goals of the first procedure was to confirm the mass of water % in a known hydrate, CuSO4 *5H2O, then to conform the empirical formula of the hydrate. Part two was the same procedure as part one. However, instead of a known hydrate, an unknown hydrate was given.

4. The IR spectrophotometer was turned on and set to process the compound. 5. The sample was scanned 16 times then a graph was displayed, depicting absorbance vs. wavenumbers. 6.

This experiment shall be repeated twice or more to enhance accuracy of the results obtained. Besides detecting systematic errors, this experiment would aid on the technique and understandings to the correct use of these equipments.

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In this experiment, we experimented finding the fundamental quantities of length, mass, and time using many laboratory tools. We used a Vernier caliper, stopwatch, rulerm meter stick, wooden block, metal block, Dial-o-gram, different masses, and circular objects. We took into consideration the uncertainties of many different tools and objects into our experiment. The inherent uncertainties of different measurements and ways to propagate those uncertainties were learned during this experiment.

The model calibration results are summarized in Figure 3. The modeled volumes are compared with monitored volumes for all the 67 events at PSW45 and results are shown in the top plot in Figure 3. The slope of linear regression between modeled and monitored volume is about 0.9 with R square error equal to 0.9 as well, indicating a good fit of modeled results to monitored results from a volume point of view. In addition, only 3 events out of 67 events (4.4%) are in the outlier of 95% prediction interval, which is another indicator for a good fit. Modeled peak flow and modeled time to peak results are also compared with the monitored results at PSW45, shown in Figure 3 respectively. For the peak flow comparison, 4 events out of 67 events (6.0%) are in the outlier of 95% prediction interval, and for the time to peak comparison, only 2 events out of 67 events (3.0%) are in the outlier of 95% prediction interval, both indicating a good fit of modeled results to monitored results. The cumulative frequency distribution (CFD) of modeled volume is compared with that of monitored volume and results are shown in the bottom plot in Figure 3. There is a 3% difference between the total modeled volume and the total monitored volume throughout the entire period from 11/10/2011 to 12/31/2012, which once more shows a good fit for all small, median, and large storm events through the entire monitoring period. After calibration, the baseline model is properly set up and ready to model the impact

Figure 4 3. The extent and location of streams, model IDs, and watershed and Planning Area boundaries.

The aim of this experiment was to examine three methods for determining the straightness and flatness of a horizontal granite surface. The first method was manual and the other two (Least Squares method and Minimum Zone method) were analysed by the computer, after a set of data