Oakland Schools Chemistry Resource Unit Intermolecular Forces Brook R. Kirouac David A. Consiglio‚ Jr. Southfield‐Lathrup High School Southfield Public Schools Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational‚ electrostatic‚ magnetic‚ or strong force. Chemical potential energy is the result
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better understand saturated solutions‚ solubility . Analysis: 2. Why was it necessary to heat the water? Be specific. Heating the water allows it to hold much more borax in solution than it could at room temperature. So after the water cooled‚ the ability of the solution to hold the solute inside decreases‚this causes the excess borax in the solution to precipitate in crystal form on the string.When the water at a high temperature‚ water molecules have more kinetic energy‚ cause it has bigger space
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Question: How much borax is needed from 1g to 5g to produce a super ball with the highest bounce from the height of 1.5m? Hypothesis: If 2 g of borax is used to make the super ball then it will produce the highest bounce because 2 g will make the appropriate number of bonds without producing a ball that is too soft or too hard to bounce. Materials: Paper cup Beaker Graduated cylinder Stir stick Pencil Scale White glue Water Safety glasses Gloves Ruler Meter stick Borax Masking tape
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Quantitative Analysis of Soda Ash by Double-Indicator Titration ABSTRACT This experiment aims to analyze the percent composition of a substance mixture by using double indicator titration. The analyte used is the soda ash which is titrated with an HCl titrant‚ standardized by 1o Na2CO3. The indicators used are phenolphthalein for basicity and methyl orange for acidity. The two volumes of the titrant are then used to calculate percent composition of soda ash analyte. Statistical parameters such
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Procedure: The first part of this lab involved the standardization of the base NaOH with potassium hydrogen phthalate‚ or KHP. First‚ about 400 mL of NaOH (10 M) were poured into the 600-mL beaker. This was used to fill the burette. The 50-mL burette was rinsed through twice with 5 mL of NaOH. Then‚ the burette was mounted on the ring stand using a burette clamp and filled to 0 mL. Some of the NaOH was drained to fill the tip of the burette. The initial volume of NaOH‚ rounded to two decimal places
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5.00 mL HCl soln. x 1.217g HCl soln = 6.085g HCl soln. 1 mL HCl soln 3.0 mol HCl x 36.5g HCl x 1mL soln. = 0.0899g HCl x 5mL = 0.4495 g HCl 1000mL soln mol HCL 1.217g HCl soln mL 6.085g HCl soln. 0.4495 g HCl = 5.63 g H2O 5.63 g H2O x 1 mole H2O = 0.312 moles H2O from HCl solution 18.02 g H2O Then the product amounts at equilibrium were calculated
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because this reagent is a very strong oxidizing agent. Solutions of potassium permanganate are unstable and their concentration changes slowly from time to time. * In this experiment a standard solution of 0.1 N oxalic acid is used for the standardization KMNO4‚ potassium permanganate oxidizes oxalic acid (C3+) to carbon dioxide (C4-) and water while itself being reduced to Mn2+. Chemicals‚ Glassware‚ Equipment Required: Chemicals: Potassium permanganate‚ ferrous ammonium sulfate (Mohr’s salt)
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normality) of the standard solution and the measured volume of unknown solution used‚ the unknown concentration can be calculated. For example‚ standard base solution (NaOH) is added from a burette to an accurately known volume of the acid solution (HCl). HCl(aq) + NaOH(aq) ------------> H 2 O(l) + NaCl(aq) This reaction (neutralization) can be written as a NET IONIC equation as follows: H+(aq) + OH-(aq) ----------> H 2 O(l) (2) (1) When sufficient NaOH has been added to react with all of the acid
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introduction to Organic Chemistry Group 3 Jude Marchoni C. Tampus Meryl Marie Susan Chua Pearl Pontillas Paolo Pepito Gaia Casas I. Abstract: (Paolo) In this experiment we will be testing what would happen to the polymer when we add borax to it. A polymer is a compound made up of large molecules often in a solid state. Polymers are chemically formed by 100 to 10‚000 small molecules called "monomers". Monomers occur in molecular units or patterns that look like beads on a string. Polymers are
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monkey snot without any directions‚ and the main materials are given were glue‚ food coloring‚ borax‚ and water . In my lab I added the food coloring in with the water then I added water leading to me adding borax. The outcome for me was that the borax was in little pieces and the texture was rough and hard like. However‚ my friend mixed the food coloring in with the glue in a cup then added the borax and water in
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