The most common are quartz (SiO¬¬ ) and lithium tantalate ( )‚ and to a lesser degree‚ lithium niobate( ).Each material has specific advantages and disadvantages‚ which include cost‚ temperature dependence‚ attenuation‚ and propagation velocity. Table I lists some relevant specifications for each material‚ including the most popular cuts and orientations . An interesting property
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the percent yield by dividing the expected yield‚ the amount of product that should be produced based on your stoichiometric calculations‚ by the actual yield‚ the amount of product that is experimentally obtained from a chemical reaction. In this lab‚ I have determined the reaction for mixing two reactants together; I measured out 0.005 moles of each reactant‚ lead (II) nitrate and potassium chromate. I dissolved‚ mixed‚ and made them react to make products; I compared the mass of the two reactants
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Enzyme Lab Report Introduction The objective of this experiment was to determine if changes in pH or temperature affected the activity of enzymes‚ specifically the enzyme sucrase. Enzymes are protein molecules that act as biological catalysts to increase the speed of the reaction or to lower the activation energy of that reaction. However‚ the activity of an enzyme can be affected by physical factors such as pH and temperature because these factors alter the structure of the enzyme (Freeman‚ 2011)
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water baths long enough or maybe too long so the temperature was not precise. Scientists may have forgotten one of the tests‚ so that data is lost. Specific errors include measuring the entire test tube from top to bottom instead of measuring the exact distance traveled by the filter paper‚ making the test results not plausible. The results of this lab proved several things. The results of the first test show that a higher enzyme concentration causes a faster rate of the substrate being broken
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in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea bag (1.615g) 50 mL beaker Ice Gloves Hot plate 500 mL Erlenmeyer flask 30 mL DI water Wash glass Ca2CO3 DCM Funnel Stopper
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control group was used to measure any transmittance that was happening without light‚ so that we could compare the other tubes that all had a fixed amount of light to it.. We set up the different amounts of light using stations that would correspond to specific test tubes. The first station contained no extra lights being added‚ the second station contained one light (1 bulb)‚ the third station contained two lights (2 light bulbs) and the fourth contained three lights (3 bulbs). There was no fifth station
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zmosis The IB Lab Report Measuring osmosis 1. Introduction My experiment is about osmosis on a potato and if or the quantity of salt affects osmosis. I would do the experiment with 5 potatoes cut into squares all the potatoes weight the same so the weight can`t be a variable the I put the potatoes on 5 different plastic cups with different amounts of salt and then I weight them again to see if the quantity of salt affected the osmosis of potatoes 1a. Research question ¿Does the quantity
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(Staudt 80). It is easy to distinguished between carboxylic acids and esters through their distinctive odors. Carboxylic acids usually have a sour odor that is not distinguishable with any specific scent. Meanwhile‚ “esters have sweet and pleasant odors often associated with fruits” (Staudt 80). In this lab‚ solubility in water‚ acidity‚ and odors of carboxylic acids will be observed. Also‚ esters will be produce and odors will be detected from the product. Finally‚ saponification will be learned
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Introduction In this lab we had to design a system that would test if changing the mass‚ angle of release and length would have any effect on the period of a pendulum. Hypothesis As the length‚ mass and angle of release change‚ the period (T) will change for each one of these factors. Materials Lab stand Protractor Cardboard Fishing line Stopwatch Weights Hook for weights Tape Ruler Weighing scale Logger Pro Variables Independent Angle of release Dependent Period Length
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Corte Madera Scientific Report Abstract I examine how rising or falling tide can affect the water level of Corte Madera Salt Marsh in this report. The data is from Wednesday (June 19th) and Thursday (June 20th). My hypothesis is that tide and water level have positive relationship. From the result‚ I learn that the water level and tide have positive relationship. However‚ when tide changes its direction‚ the water level is likely to stay or little change. Introduction On June 19th‚ my
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