indicator‚ phenolphthalein‚ to the acid in the flask. 7. Using the slider on the right hand side‚ add NaOH to the HCl in the Erlenmeyer flask (This action is known as titrate). Add the indicator until the color of the indicator turns a light shade of pink. 8. Record the volume. 9. If you went too far past the end point‚ please record the results of your trial. Include all sets of data in your lab report. Part II: Titration with a pH Meter 1. Fill the 50-milliliter buret with a 0.25 molar NaOH
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“From the Great Above to the Great Below” is a story the majority of modern cultures are unfamiliar with. Being written in cuneiform‚ the text originates in ancient Mesopotamia‚ specifically Sumer. Thus‚ the text we have now is a translation‚ yet to the best of their ability the translators attempt to replicate the style and content of the original story. Because of this I find that the style the myth is written in creates some distance between the myth and a modern audience. For me‚ being able
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effect of three different pH levels (4‚ 7‚ 10) on the rate of germination of spanish beans Research Question: What is the effect of three different pH levels (4‚ 7‚ 10) on the rate of germination of spanish beans? Independent Variable: The different pH levels in the water would be the independent variable in this lab. Three different pH levels were tested‚ 4‚ 7 and 10‚ both 4 and 10 were chosen because they are 3 pH levels away from 7 which would be the regular pH level of water. We measured
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Returns to Scale Returns to scale is a concept that tries to explain the behaviour of the output in relation to the change in the total scale of operations of the firm. A change of scale of operations means a change in the total size of the firm‚ i.e. a change in both labour and capital of the firm. For determining the returns to scale‚ we need to calculate the Output Elasticity where: Output Elasticity = % change in Output/% change in all inputs The different types of returns to scales are:
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wooded areas‚ the oldest was created in 1989 the second was created in 1994 and the youngest plot was created in 1999. For the hypothesis to be tested‚ there were soil PH meters to test the amount of PH in each plot’s soil. The hypothesis was incorrect; there was not a significant difference in the means of the PH from the oldest plot compared to the youngest plot. Introduction The definition of vegetation is plants considered collectively especially those found in a particular area or habitat
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analyzing pH it measures for the acidity or basicity of a solution. pH levels vary depending on the solution. The more acidic solutions would be juices and vinegar and cleaning materials would be basic. You can determine the purpose of solutions based on their acidity and basicity. We measure the pH of solutions on a scale with levels from 1-14. These levels may change if other solutions are added‚ we can tell what the pH will be based on its colour. Solutions called buffers change the pH levels of
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Enfermagem‚ Latino. Predictive Validity of the Braden Scale for Pressure Ulcer Risk. 2011 January. www.eerp.usp.pr/rlae. Enfermagem study implicates the efficiency of Braden scale as an indicative measures for PU development. Covering four intensive care units of general private hospital considering certain criteria of first‚ second and third assessment of Braden Scale‚ the study is indeed another step to obtain validation that using the scale is effective by achieving cut -off score of thirteen
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1 9/7/2012 English 101 On a scale from 1 to 10 "The Pain Scale" by Eula Biss is a very controversial and interesting piece of writing in which Bliss attempts to determine a scale to measure her pain. However‚ the writer begins to realize that the duty of associating pain with a number and measurement is much harder than it appears due to the fact that she is unsure what it truly means to "measure things". The practice of giving pain a set of numbers was introduced by the hospice
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Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of colors depending on its pH level was
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ECONOMIES OF SCALE Economies of scale are basically the increase in efficiency of production as the number of goods being produced in a firm increases. Typically‚ a firm that achieves economies of scale lowers the average cost per unit through increased production since fixed costs are shared over an increased number of goods. Fixed costs are those costs of production that do not change when output changes. There are two types of Economies of Scale: Internal economies External economies Internal
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