laboratory is to calculate the solubility of a substance under a variety of temperatures and construct a solubility curve based on experimental data to see the effect of temperature on solubility. Data collection and quantitative observation VOLUME H2O/ml/±0.05 TEMPERATURE/°C/±0.1 5.00 71.3 6.00 59.3 7.00 52.4 8.00 47.2 9.00 41.8 Mass of NaCl: 3.0±0.05 g Data Processing To calculate the solubility‚ we need to use the formula: Solving for x‚ the solubility of salt‚ we get the formula:
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Carrington Lucas Spring 2013 Essay 1 Found Object Essay As I stumble my way through life‚ I found the one thing that the thing that is very important to me my family. Nothing compares how greatly family impacts people. I can’t imagine myself having a career that doesn’t involve helping my family or others’. I want family to be a part of my life‚ regardless if I am being an orthodontist for children or working in finance making sure that families are financially stable. There are many reasons
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FACTORS AFFECTING SOLUBILITY There are three main factors that control solubility of a solute. (1) Temperature (2) Nature of solute or solvent (3) Pressure EFFECT OF TEMPERATURE Generally in many cases solubility increases with the rise in temperature and decreases with the fall of temperature but it is not necessary in all cases. However we must follow two behaviours: In endothermic process‚ solubility increases with the increase in temperature and vice versa. For
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concentrations of a miscible liquid (ethanol) on the solubility of KNO3 in water. The results of the investigation support the hypothesis that water‚ which exhibits greater polarity‚ is able to dissolve a greater mass of KNO3 at lower temperatures compared to tested concentrations of Ethanol ranging from 12.5% to 30%. Furthermore‚ the results of the graph 1 show correspondence to the dielectric constant of each solvent as both the starting solubility of the solubility curves and the dielectric constant of the
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slows down a person’s reaction time. LeBeau states‚ “On average‚ it took me four times longer to hit the brake [while being distracted and driving]” (1). Therefore‚ LeBeau’s results matched up with the final results for Car and Driver Magazine; it took an unimpaired driver .54 seconds to break‚ yet for a person sending a text while driving‚ it took 70 more feet to break. Furthering Car and Driver Magazine’s study‚ it shows that it only
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Our ethical decisions are a result of social conditioning. Discuss. (35marks) Clarence Darrow could be said to be the most famous person who supported the idea of social conditioning. He argued that human beings cannot be held responsible for their actions because nurture has brought them up a certain way. In his case where he legally represented Leob and Leopold‚ he argued that morality can’t exist if humans are responsible for their actions‚ because no-one can be held morally responsible for anything;
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082 g/mL | Irritant (eyes/skin). Toxic by inhilation‚ Flammable (fp 49 ºC). | Discussion: Recrystallization is a widely-used technique to purify a solid mixture. The desired product is isolated from its impurities by differences in solubility. Insoluble impurities and colored impurities can be removed from hot solvent through the use of activated carbon and filtration. Soluble impurities remain in the cold solvent after recrystallization. The desired product should be as soluble as
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fingerprinting are limited‚ respectively‚ to outdoor applications or require offline signal learning. In this paper‚ we present a smartphone-based autonomous construction and management of a personalized location provider in indoor and outdoor environments. Our system makes use of electronic compass and accelerometer‚ specifically for indoor user tracking. We mainly focus on providing point of interest (POI) locations with room-level accuracy in everyday life. We present a practical tracking model to handle
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Solubility Rules Chart Negative Ions (Anions) + Positive Ions (Cations) = Solubility of Compounds in water Example any anion + Alkali Ions (Li+‚ Na+‚ K+‚ Rb+‚ Cs+‚ Fr+) = soluble Sodium fluoride‚ NaF‚ is soluble any anion + hydrogen ion [H+ (aq)] = soluble hydrogen chloride‚ HCl‚ is soluble any anion + ammonium ion (NH4) = soluble ammonium chloride‚ NH4Cl‚ is soluble nitrate NO3- + any cation = soluble potassium nitrate‚ KNO3‚ is soluble acetate (CH3COO-) + any cation (except
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Experiment 1: Study of Solubility Equilibrium Data Treatment and Analysis Section 1: Solubility Product Constant Temperature (˚C) | Volume of NaOH used (mL) | | | | Titration 1 | Titration 2 | Average | 28 | 12.7 | 12.8 | 12.75 | 9 | 10.5 | 10.5 | 10.5 | 19 | 11.3 | 11.2 | 11.25 | 40 | 16.2 | 16.2 | 16.2 | 50 | 22.8 | 22.9 | 22.85 | Table 1: The volume of NaOH used in the titration at various temperatures. No. of moles of KHC4H4O6 = 1.45 g ÷ 188.177g/mol = 7.71 x 10-3mol
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