Calculate the approximate volume of vinegar to react with 25 mL of 0.1 M NaOH. Trial 3 Trial 2 Trial 1 Mass of flask (g) I 22.667 44 347 123.sa S Mass of flask + vinegar sample (g) Mass of vinegar sample (g) 87. S42 125.647 24.583 2.993 2.98 2.998 Initial buret reading of NaOH (mL) Final buret reading of NaOH (mL) Volume of NaOH dispensed (mL) [NaOH] (M), average from Part 3.50 13. S 36 7 31/4 27.9 27. 28.6 Moles of NAOH dispensed Moles of acetic acid in vinegar sample Mass of acetic acid in vinegar sample (g) Percent by mass of acetic acid in vinegar sample (%) A

A 0.53 g sample containing KBr (MW=119) is dissolved in 50 mL of distilled water. Titrating with 0.04614 N AgNO3 requires 28.5 mL to reach the endpoint. Calculate the %w/w KBr in the sample. (Round-off your answer to 2-decimal places)   Answer = ____%

Desk Name Date Lahoratory Instructor Unknown nen, or letter REPORT SHEET EXPERIMENT Gravimetric Analysis 6. 5%. of a Chloride Salt Trial I Trial 2 Trial 3 O SS g 0.96 0.25 O.46 8 0-82 6.25 Mass of sample Mass of filter paper + AgCI O.87 0.25 Mass of filter paper Mass of AgCI Mass of Cl in original sample (show calculations) W 1. Percent chloride in original MPle (show calculations) Average percent chloride (show calculations) Standard deviation (show calculations) Relative standard deviation expressed as a percent (show calculations) Do any of your results differ from the mean by more than two standard deviations? Reported percent chloride Copyriglht C 2018 Pearson I duc atun, Inc

Note: This is an algorithm question so each attempt will have unique set of measurements. The following results were obtained when a sample of white cranberry juice was analyzed to determine its Vitamin C content. A 82.0 mL sample of the juice was placed in a flask with excess H2SO4, excess KI, and 11.00 mL of 0.07 000 M KIO3. Titration with thiosulfate solution required the use of 1.63 mL of 0.08826 M. Calculate the concentration of Vitamin C in the juice sample as mg Vit C per 100 mL juice. Here are some steps to help you work your way along the problem. All the reactions in the Background apply. • How many total millimoles of I are produced from the Reaction 4 between KI and KIO3? • How many millimoles of I are consumed in Reaction 3 with thiosulfate? . Using your previous two answers, how many millimoles of I reacted with the Vitamin C in the juice? • How many milligrams of Vitamin C were in the juice sample? • What is the concentration of Vitamin C in the juice sample expressed as…

< Report - Gramma NGLSync X OWLv2 | X Cengage + entActivity.do?locator-assignment-take 0 How many amperes are required to deposit 0.291 grams of magnesium metal in 213 seconds, from a solution that contains Mg²+ ions. 2+ A Submit Answer Retry Entire Group 9 more group attempts remaining a 68°F Et OFE 1:37 PM 5/27/2022

A 50.00 mL burette is reported to have an uncertainty of 0.03 mL in volume measurement. A titration was performed using this burette and the volume is tabulated as: Initial reading: 1.00 mL, Final reading: 15.05 mL. The titration volume with uncertainty in measurement should be reported as 14.05 ± __________. *Provide your answer to two decimal places and without units. Avoid using scientific notation.

using the given values for trial 1, how would you find the mass of pure liquid H2O2?

Often the analyst will compare known quantities of analyte to unknown quantities of the material to be analyzed. This may be done in one of three ways: -use calibration curves; use standard additions; or use internal standards. The method of standard additions would be used when A) the quantity of sample analyzed or the instrument response varies from run to run.   B) the standard solutions and the unknown solution all have similar characteristics are unaffected by the other material in the sample.   C) the sample composition is unknown or complex and affects the analytical signal.

Mean, standard deviation, Coefficient variable, and 95% confidence limits of HCl molarity's *0.08883M * 0.08743M * 0.08790M

ph of 0.10 M NaNO2 (Ka of HNO2 is 4.5 x 10-4 ?