4.9__Lab_Redox_Titration

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

2- Lab Report 1 Post-Lab Part A How could you distinguish solution of sodium chloride (table salt) from a solution of sodium iodide (a poison) using an AgNO3 solution? Show reactions. Express your answers as balanced chemical equations. Identify all of the phases in your answer. Seperate the two equations by a comma. > View Available Hint(s) Submit Request Answer Part B Complete previous part(s) Provide Feedback

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I need help with one of my pre-lab questions which I want to understand. Its question number 2, the one that highlighted. I don't want to make it over-complicated, I want something that I can understand.

Based on the data given answer questions. 1,3, and 5 please ?? Question 2 is already answered to solved 1 and 3 1. Based on your three trials, discuss the precision of your data 2. The actual concentration of the unknown is 0.200 M. (Check with instructor to ensure that this value is accurate.) Calculate the percent error based on the average molarity of your three trials. Answer: Actual Molarity= 0.200M Mcalculated = 0.1755M % error = ( [actual - calculated value]/actual ) *100 Putting values; = ((0.200 - 0.1755)/0.200 )*100 = 12.25% 3. Based on your answer to (2), discuss the accuracy of your data. 5. 80.0 mL of 0.30 M NaOH and 80.0 mL of 0.30 M HCl are mixed together. What is the approximate pH of the solution —acidic, basic, or neutral? Explain.

Match each chemical or item with the proper disposal or cleanup method. Not all disposal and cleanup methods will be labeled. damp metal pieces Part B Return to correctly labeled "drying out" beaker. Answer Bank damp metal pieces Part B Place used items in the drawer. calcium chloride solutions Part A Rinse with deionized water, dry as best you can, return to volumetric flask Part A the instructor. volumetric flask Part A metal sheets Part C Return used material to the instructor. damp metal pieces Part B calcium chloride solutions Part A Pour down the sink with plenty of running water. metal sheets Part c volumetric flask Part A Pour into aqueous waste container. damp metal pieces Part B Place used items in garbage.

3:52 Chegg 12.94 46 | ... KB/s expert.chegg.com/expertqna (2) Home Expert Q&A My answers My stats Today CF Score: Answered: Skipped: Time remaining: 00:09:20 Chemistry please neat writing! 13.28 Pick an appropriate solvent(s) from table to dissolve each of the following substances. Common Polar Common Nonpolar Solvents Solvents water hexane (H₂O) (C6H12) acetone diethyl ether (CH3CH₂OCH2CH3) (CH3COCH3) methyl alcohol (CH3OH) toluene (C7H8) Part A glucose (polar) Express your answer as a chemical formula. If there is more than one answer, separate them by a comma. ΑΣΦ ? Part B salt (ionic) Express your answer as a chemical formula. If there is more than one answer, separate them by a comma. ΑΣΦ ? Part C vegetable oil (nonpolar) Express your answer as a chemical formula. If there is more than one answer, separate them by a comma. ΑΣΦ ? Part D sodium nitrate (ionic) Express your answer as a chemical formula. If there is more than one answer, separate them by a comma. 2= | ΑΣΦ 1 ? Answer…

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You will write an informal procedure in your lab notebook, and after lab, write a written procedure for the Post-lab. Match the following with the type of procedure. Hint: Refer to the 'Guide for Success in the General Chemistry Laboratory' in the front matter of your lab manual for further information regarding the differences between these two types of procedures. Contains as much detail as possible (i.e. type of glassware, concentrations) Contains only enough detail to concisely convey to the reader what occurred. Written step-by-step Written in paragraph form Written in past passive voice ✓ [Choose ] Informal procedure Written procedure [Choose] [Choose] [Choose ] [Choose ]

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help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

Instructions You are required to produce a short lab report using the information given in the accompanying document, ‘Lab report assessment_student data’. This document introduces an experiment, and also provides a set of experimental data for this experiment. You are required to use this data to perform steps 8 and 9 of the procedure. This includes calculations of a particular value, and then comparison to the true value. Consider any experimental errors when comparing calculated values and true values. Your report should be between 300 and 500 words (including all table contents and titles of tables and graphs). Your lab report should consist of three sections only: • Experimental • Results and Discussion • Conclusion You do NOT need to include an introduction section. Your experimental section should be written in appropriate lab report format, (passive voice, 3 rd person, in paragraphs). Your results and discussion section should contain the data presented in table format, and…

15 16 17 18 19 20 21 22 23 24 25 26 27 An aqueous solution at 25 °C has a OH concentration of 1. x 10 "M. Calculate the H,O' concentration. Be sure your answer has 1 significant digits. -10 M dh Submit Assignment Continue MacBook Air F12 F9 F10 888 O00 FB 30 F7 F5 F6 esc F4 F2 F3 F1 & @ # $ %3D 4 5 7 8 9 2 3

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Data Table Final buret reading Initial buret reading Volume used Sample 1 Vinegar Base Vinegar Sample 2 Sample 3 (if needed) Base Vinegar Base JOML Som 0,05 110mL/802 10ML 884 JUML 0.00 10μL OML Tome 0.00 10mL 80.2 mL 10ML 88mL come some *If a pipet is used to measure the volume of vinegar, record only in the space for volume used. Molarity of base (NaOH) 1685 M Vinegar number N/A CALCULATIONS: In the spaces below, show calculation setups for Sample 1 only. Show answers for both samples in the boxes. 1. Moles of base (NaOH) 2. Moles of acid (HC2H3O2) used to neutralize (react with) the above number of moles of base 3. Molarity of acetic acid in the vinegar Sample 1 Sample 2 Sample 3 (if needed) 4. Average molarity of acetic acid in the vinegar 5. Grams of acetic acid per liter (from average molarity) 6. Mass percent acetic acid in vinegar sample (density of vinegar = 1.005 g/mL) - 252 -

Based on the given data, determine the vitamin C content (in weight %) in your tablet and orange juice powder. Show your calculations.

View Passage | Disable Passage Scrolling Read the passage on the left to answer the following questions: The Catching of Unshelled Fish Olive Green (Myrtle Reed) 3) 1 Shell-fish are, comparatively, slow of movement, without "For one small bass which could have been bought at any guile, pitifully trusting, and very easily caught. Observe the trustworthy market for sixty-five cents, or, possibly, some poor little kitten-fish-offspring of a catfish--whose mother's milk is not yet difference between the chunk of mutton and four feet of string with which one goes crabbing, and the complicated dry upon its lips." hooks, rods, flies, and reels devoted to the capture of unshelled fish. The author's diction in the sentence makes the audience )) 2 An unshelled fish is lively and elusive past the power of words to portray, and in this, undoubtedty, lies its desirability. People will travel for two nights and a day to A) feel sorry for the catfish some spot where all unshelled fish has once been…

Calculate moles of acetic acid in vinegar

1. Select a product from the stock shelf and transfer the liquid to a test tube. 2. Select a paper pH test strip. Record the color of the test strip in the data chart. Transfer it to the same test tube. 3. Note any color change of the paper and record in the data chart. 4. Drag the test tube containing the test strip over to the color chart to determine the pH range indicated by the paper. Record your results. 5. Record your conclusion about whether the substance is an acid, a base, or a neutral substance. 6. Repeat for all substances.

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

For each of the following scenarios, determine if the error will cause the molarity of the hydrochloric acid to be greater than, less than, or the same as the initial value. A: A student adds 50 mL of water to the reaction flask with unknown hydrochloric acid instead of the 25 mL sated in the procedure. B: A student adds 50 mL of water to the reaction flask with unknown hydrochloric acid instead of the 25 mL stated in the procedure. C: A student doesn't notice the some of the HCL has dripped out from the volumetric pipet when transferring to the reaction flask