Chapter 11 Section Assessments Section 11.1 7. How do you write a word equation? To write a word equation‚ write the names of the reactants separated by plus signs followed by an arrow‚ and followed by the names of the products separated by plus signs. 8. How do you write a skeleton equation? To write a skeleton equation‚ write the formulas of the reactants to the left of the arrow and the formulas of the products to the right of the arrow. 9. Describe the steps in writing a balanced chemical
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Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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Experiment A Spectroscopic determination of Iron with Phenanthroline Unknown # 2 Mass of Mohr’s Salt: 0.2040 1. 5mL of 6M acetic acid was measured and transferred into a 100mL volumetric flask with a pipette and diluted to the mark. Concentration = [0.2040(±0.0001)g/100(±0.08)mL]*[(1mol/392.16g)/(1L/1000mL)] = 0.005202(±0.09382%) = 0.005202(±0.000005)mol/L 2. 10mL of the above stock solution was transferred to a 250 mL volumetric flask and diluted to the mark. Concentration
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Determination is The Key to Changing the World We see incredible things happen from incredible people every day‚ however these great things don’t just grow on trees‚ this is the one word that summarizes how they happen : determination. Teen activists are some of those incredible people‚ and you might be surprised that they’re just kids. To do those incredible things they need one thing‚ determination. Because the work that they do is anything but easy. Teen activists are determined to make one aspect
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Solubility Product Determination Purpose • To determine the solubility product constant‚ Ksp‚ of an ionic compound. Introduction The solubility product constant‚ Ksp‚ is a particular type of equilibrium constant. The equilibrium is formed when an ionic solid dissolves in water to form a saturated solution. The equilibrium exists between the aqueous ions and the undissolved solid. A saturated solution contains the maximum concentration of ions of the substance that can dissolve at
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Ice Calorimeter Determination with Mg June 18th 2013 Abstract: This experiment determines the amount of energy needed to melt ice. A spontaneous increase in enthalpy produce by combining 0.2036g Mg and 5.00mL H₂SO₄‚ ice was melted and readings were taken by using an ice calorimeter. Readings were taken before during and after the reaction were completed. The data taken shows a value of -405 KJ/mol while the theoretical value was -483.7 KJ/mol. Calculating the experimental
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ISE: The Determination of Chloride Unknown: #34 I. Purpose: In experiment V‚ “ISE: The Determination of Chloride”‚ the concentration of an Unknown Chloride solution‚ and the Wt% of NaCl in a sample of celery salt‚ were both determined. To determine the concentration of an Unknown Chloride solution‚ a Calibration plot is first prepared. The Calibration plot is made by first measuring a series of known concentrations of Cl- (with the same activity of the unknown solution) and obtaining
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Water Quality Monitoring at Pulau Bidong Muhammad Amirul Siddiq B Abd Rashid UK 28208 Dr Hasrizal Shaari Table of Content 1.0 Introduction 2.0 Literature Review 2.1 Nitrite-Nitrogen (NO2—N) 2.2 Chlorophyll-a 2.3 pH 2.4 Salinity 2.5 Dissolved oxygen 2.6 Total Dissolve Phosphorous 2.7 Temperature 3.0 Methodology 3.1 Sampling Area 3.2 Sampling Method 3.3 Hydrolab Data 3.4 Laboratory Analysis 3.4.1 Cholorphyll a 3.4.2 Phosphorous
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I believed in 11:11 but Adam didn’t. (11:11 Numerologists believe that events linked to the time 11:11 appear more often than can be explained by chance or coincidence. This belief is related to the concept of synchronicity source: https://en.m.wikipedia.org/wiki/11:11_(numerology) ) Adam is my neighbor (he lives next to me) and he makes me happy more than anyone (he is the reason behind my smile) ... Adam lives with a poor family‚ he barely goes out except for school I think. Adam has a few number
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the National Drinking Water Quality Standards (NDWQS) in 1983‚ with the most recent revision in 2000 due for circulation for use in 2002. The standards stipulate limits for physical‚ chemical‚ microbiological and radiological parameters and compliance with these standards is mandatory for all private water suppliers. Supporting documentation is available to ensure effective implementation of the standards and include information on the National Programmed for Drinking Water Quality Surveillance‚
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