Assessment Rubric 3 Measurements are to the correct number of significant figures Units included Answers are within the range of acceptable error Measurements finished within the prescribed time limit All measurements 2 2 or 3 measurements 0 Less than 2 measurements All measurements 2 or 3 measurements Less than 2 measurements Less than 2 measurements All measurements 2 or 3 measurements All measurements 2 or 3 measurements Less than 2 measurements Questions Answered
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Candace P. Wong‚ Victor Lorenzo E. Experiment 1 Use of Micropipettor and Spectrophotometer Introduction In scientific experiments‚ correct measurements are required to achieve precise and accurate data. Precision is the degree to which several measurements provide answers very close to each other. Accuracy describes the nearness of a measurement to the standard or true value. Certain measuring devices are used to attain precision and accuracy. One example is the Air displacement pipette
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it in research and sampling is to make sure that inclusion of all races‚ cultures‚ and sexes are provided when picking areas of sampling. On top of sampling there is data collection in research. Data collection is also known as the scales of measurement in research. The scales of
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relationship between the mass of magnesium and mass of oxygen once the magnesium has been heated and reacted with the oxygen. There will be 3 variables in this experiment. The independent variable will be the mass of magnesium ribbon as different measurements will be taken and used for each trial. The dependant variable will be the mass of Magnesium Oxide‚ this is a measured variable as the mass of oxygen can be calculated and will enable us to determine the formula for Magnesium Oxide. The controlled
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stronger the concentration of the solution‚ the stronger the viscosity of the solution. Variables Independent variable: * Concentration of C6H12O6 Dependent variable * Time it takes to pour 1cm3 of the C6H12O6 solution as an indirect measurement of the viscosity of the solution Controlled variable Temperature of the solution | Controlled by putting all solutions in a water bath set at 35°C until they have reached temperature of 35°C | Distance solution travels | Controlled by always
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Then you will make a graph of the data. Make at least three more measurements for each of the previous three height dropped levels. Find the average height bounced for each level and record the data and the average values. Make a new graph of the average height bounced for each level that the ball was dropped . Draw a straight line best fit that includes the origin by considering the general trend of the data points measurement data. Draw that straight line as close as possible to as many data
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theoretical constant that governs‚ sometimes with an iron fist‚ the everyday lives of humans. Time has many different measurements. There are stellar measurements‚ such as the phases of the moon or the rotation of the Earth around our Sun. There are extremely long measurements of time‚ like the geological epoch that can span for tens of millions of years‚ and there are very small measurements such as planck time‚ a unit commonly used to measure events in quantum mechanics and is so small that a single unit
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water. Secondly‚ after washing the electrode is wiped off by the soft tissue paper because the glass electrode is very sensitive. Also‚ the water can affect the concentration of the solution being measured which can also results in an error in the measurement. Q4. How is Vaisala probe calibrated? Ans. The Saturated salt solutions are used to calibrate the Vaisala probe. The results are transferred into the graph and compare with the standard curve and and fix it to compare the values on the standard
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University of Phoenix Material Data Collection and Analysis Grid Use the two articles assigned by your facilitator to identify the following data collection‚ analysis‚ and measurement elements for the studies. Limit each box to no more than three sentences. | |Qualitative |Quantitative | |Data collection methods |Purposeful sampling was used to select the |A ramdomized
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strawberry. In the experiment‚ we measured the absorbance of different concentrations of Methylene Blue. The data collected by our group is presented on Figure 1 and the average absorbance measured by whole class is stated on Figure 2. Table 3 shows the measurement on the amount of strawberry DNA extracted. In Figure 1 and Figure 2‚ the data will be presented Standard Curve Graph. The relationship between the concentration of Methylene Blue and the absorbance is expected to be a direct proportion.
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