ORANGE OIL LAB COMPLETE

An oil sample had its iodine number determined using the pyridinium tribromide method. The sample and reagents used are as follows: Oil sample: 0.19 mL, density: 0.954 g/mL Pyridinium tribromide: 0.472 g Na2S203: 0.1 M, endpoint 27.68 mL %3D What is the approximate Bromine Number? O 138 89 O 120 O 200

4 = 5 = 6 7 = 8 F 10 = 11 E 12 F 13 In a 0.20 mM aqueous solution of trimethylacetic acid (C¸H,CO,H), what is the percentage of trimethylacetic acid that is dissociated? You can find some data that is useful for solving this problem in the ALEKS Data resource. Round your answer to 2 significant digits. 0% Continue Submit Assignment O2020 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy Accessibility esc 80 DD F2 F3 F4 F5 E7 F8 F9 F10 F11 F12

Part 1 Walk nodi bas maldorq gniwollot oil bas od steluola) (c) obinoldo (11)non g 42 anino nohtulos 200oups Jm-0.28nA Solution 1 2 3 4 Data related to aqueous solutions of sodium chloride (NaCl) and aqueous solutions of ethanol (C₂H5OH) are provided in the table below. Use the table to answer the following questions. Circle the letter of the choice that best answers the question. NaCl 3.0 3.0 3.0 3.0 Mass (g) H₂O 100.0 200.0 300.0 400.0 Solution 5 6 7 8 Totuloa sili to 22m orb ei 18W 2 Toobtulos sit to omulov o zi indWa 3. What is the percent by volume of C₂H5OH in Solution 5? a. 0.2% b. 1.9% c. 2.0% Volume (mL) C₂H5OH 2.0 5.0 9.0 15.0 H₂O 100.0 100.0 100.0 100.0 d. 22%

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Compound Phthalic Acid *Formula: C ₂ H 6 Ou Naphthalene Water Methanol Structure +01 with purity Pu ON Mol (g/m Procedure: 1. Prepare Hot Water for Recrystallizations 16 ( 12 All data and observation taken during lab should with a single line so the original is still legible. Add-100 mL of water to a 125-mL Erlenme Add a boiling stone to prevent bumping dur

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SAMPLE: CANE VINEGAR % acidity in label: 4.5% %purity of KHP: 99.80% FORMULA WEIGHT of KHP: 204.22 g/mol STANDARDIZATION OF NAOH SOLUTION TRIAL 1 TRIAL 2 TRIAL 3 Weight of KHP, g Initial volume of NaOH, mL Final volume of NaOH, mL 0.1012 0.1004 0.09987 5.00 10.01 4.95 9.99 14.93 Molarity of NaOH Average Molarity of NaOH ANALYSIS OF ACETIC ACID IN A VINEGAR SAMPLE TRIAL 1 TRIAL 2 TRIAL 3 Volume of vinegar, mL 1.00 1.00 1.00 Initial volume of NaOH, mL 14.98 22.90 30.87 Final volume of NaOH, mL 22.84 30.77 38.75 Molarity of acetic acid Average molarity of acetic acid ANALYSIS OF CARBONIC ACID IN A SODA SAMPLE TRIAL 1 TRIAL 2 TRIAL 3 Volume of soda, mL 20.0 20.0 20.0 Initial volume of NaOH, mL 20.20 22.05 23.93 Final volume of NaOH, mL 22.03 23.89 25.8 Molarity of carbonic acid Average molarity of carbonic acid

Data Analysis: 1. Create an Absorbance (Y) vs. Concentration (X) graph using data from the six standard solutions above. 2. Perform a linear trendline analysis of your six data points. Display the equation and R² value on the graph with a minimum of 8 decimal places. 3. On the same graph, perform a 2nd order polynomial trendline analysis of your six data points. Display the equation and R² value on the graph with a minimum of 8 decimal places. 4. Turn in your graph as the last page of this report. 5. On a separate piece of paper calculate the concentration of the unknown solution using both the linear and 2nd order polynomial trendline equations (Show all work) 6. Choose the best unknown concentration from #4 above and report it with three significant figures in the unknown data table above.

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Table 1 lists 33 pure compounds, several of which you will select to mix with each of your unknowns, so that you can determine the melting points of the mixtures, and thus the identity of the unknowns.   Table 1.  Known Compounds for Melting Point Experiment     COMPOUND mp range (oC)   COMPOUND mp range (oC)   1)   1,4-dimethoxybenzene   54-56        21)   4-nitroaniline   146-149   2)   2-phenylphenol   57-59        22)   1-napthoic acid   158-160   3)   diphenylacetylene   59-61        23)   salicylic acid   159-161   4)   2,4,6-trichlorophenol   64-66        24)   triphenylmethanol   160-162   5)   biphenyl   68-70        25)   sulfanilamide   165-167   6)   methyl 3-nitrobenzoate   78-80        26)   4-bromoacetanilide   165-169   7)   naphthalene   80-82        27)   itaconic acid   165-168   8)   vanillin   81-83        28)   d-mannitol   166-168   9)…

The Ksp of A3B2 = 1.04x10^-23.What is its solubility in water?       a. 1.0x10-5M    b. 5.6x10-7M   c. 1.04x10-23M   d. 3.1x10-13M

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X Tn Course: CHM2 X traductor inglé x Course Home x Draw four pos x (52) Jesús Adi x .com/course.html?courseld=17244391&OpenVellumHMAC=a7c4c-4fd317b8b94f4fb8424c70763f#10001 enter image source... GC1 sp22 urse Home Katomic structure and auf Bau Problem 7.29 Part A Which neutral atom is isoelectronic with each of the following ions: F-, Ca2+, P3+, K+, Pb²+? Express your answers as chemical symbols separated by commas. ? ΑΣΦ Request Answer Submit Provide Feedback G

Table of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…

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Chec Home Percer Answe Submit Answe b Home Submit Answer b Answe C Chego https://east.cengagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take This question has multiple parts. Work all the parts to get the most points. Try Another Version [References] An aqueous solution containing 11.0 g of starch per liter has an osmotic pressure of 4.10 mm Hg at 25 °C. Blackb Conte a what is the average molar mass of starch? (Because not all starch molecules are identical, the result, will be an average.) Molar mass= g/mol 2 item attempts remaining OWX