Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this‚ the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular
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no explanations for my flaws. I don’t have to justify my mistakes‚ my past‚ or my insecurities. I am growing and learning. Let me live. — Unknown “Tweet this quoteIf they respect you‚ respect them. If they disrespect you‚ still respect them. Do not allow the actions of others to decrease your good manners‚ because you represent yourself‚ not others. — Unknown “Tweet this quoteI don’t let anyone’s insecurities‚ emotions‚ or opinions bother me. I know that if I am happy‚ that’s all that matters to
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electrons jump down from higher layers they release energy in the form of light. Materials: CoCl2 Na2SO4 CaCl2 KCl SrCl2 CuCl2 LiCl Unknown A Unknown B Distilled H2O Q-tips Beaker Bunsen Burner Spectroscope Spot Plate Procedure: 1. Light the Bunsen Burner. 2. Fill a beaker with water. 3. Get the spot plate with all the known and unknown salts. 4. Get a Q-tip and dip it in the beaker. 5. Dip the Q-tip in CoCl2. 6. Hold the Q-tip over the flame until it starts to turn black
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naphthalene biphenyl mixture‚ as well as determining the melting point of an unknown substance by comparing it with two known samples. Melting point is a temperature in which a substance changes from solid state to liquid state. Melting points are used to determine whether the given substance is pure or not. Substances that melt sharply‚ less than 1-2°C indicates pure substance. Melting point can also be used to identify an unknown substance‚ by comparing its melting point with known substances melting
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Standardization of NaOH and Determination of Unknown Acid KEYWORDS: quantitative analysis‚ titration‚ buret‚ endpoint‚ standardization‚ half-equivalence point‚ calorimetric titration‚ potentiometric titration ABSTRACT: The concentration of sodium hydroxide was determined by colorimetric titration‚ and the identity of an unknown acid was determined by potentiometric titration. In the first titration‚ a strong acid standard‚ potassium hydrogen phthalate (KHP)‚ was used‚ to determine the concentration
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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 a set
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Conclusion: Unknown solution A was Fe2(SO4)3 * 5H2O. Unknown solution B was Fe(NH4)(SO4)2 * 12H2O. Unknown solution C was FeCl3 * 6H2O. Unknown solution D was Fe(NO3)3 * 9H2O. The professor should have confidence that these are the correct identifications for the bottles because although the groups as a whole did not have the best
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information is known or unknown by the person‚ and whether the information is known or unknown by others in the team The four regions‚ areas‚ quadrants‚ or perspectives are as follows‚ showing the quadrant numbers and commonly used names Johari window four regions 1. 2. 3. 4. Open area‚ open self‚ free area‚ free self‚ or ’the arena‘: what is known by the person about him/herself and is also known by others Blind area‚ blind self‚ or ’blindspot‘: what is unknown by
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the Association for Safe Pharmaceuticals. Therefore‚ the lab must discover the accuracy of the ingredients listed on Panacetin’s label. The unknown in this experiment is presumed to be something similar to acetaminophen‚ such as acetanilide or phenacetin. Recrystallization and melting point temperature were used to help identify the unknown in Panacetin. Recrystallization removes impurities as a substance goes through physical transformations from a solid to a liquid and back to a solid
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Determination of an Unknown Compound using Mixed Melting Point Method Winnie Adrian Ibanez‚ Jerome Allan Japitana‚ and Dante Jimenez III Group no. 7‚ 2Chem a Department of Chemistry‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ 1015‚ Philippines |ARTICLE INFO |ABSTRACT | |Article history: |Keywords: |An unknown compound was
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