After performing Part A of the experiment, a student obtained the following concentrations for sodium hydroxide. Calculate the average concentration. Report your answer with four places after the decimal. Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 0.973 0.932 1.014 1.023 1.096 0.951
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After performing Part A of the experiment, a student obtained the following concentrations for sodium hydroxide. Calculate the average concentration. Report your answer with four places after the decimal.
| Trial 1 | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Trial 6 |
| 0.973 | 0.932 | 1.014 | 1.023 | 1.096 | 0.951 |
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- Experiment-A8: Spectrophotometry of Cobalt( Pre-laboratory Exercises 1. (a) Define Beer's law and give the mathematical equation (specify each symbol in the equation). concentration of achemical Solution Beer's Law states that the in the following A = Ebc is directly proportional to its absorption of light & can be calculated formula (b) Briefly explain what Beer's plot is and how do you obtain the Beer's constant (k) from the plot. is a straight line with _ay-intercept Beer's plot of zero & a slope of ab oreb. It represents the absorptunity the length Absorbance 8 can be calculate by multiplying Constant by the path length then dinding that value by the 2. The following solutions are prepared from 0.200 MNICI, and their absorbance measured at 725 nm. Solution # 1 2 3 4 5 Volume (mL) of 0.200 M NiCh 1.00 2.00 3.00 4.00 pride 5.00 Volume (mL) of H₂O 4.00 3.00 2.00 1.00 0.00 INICI] (a) Calculate the molar concentration of NiCl₂ in each solution 1-5. Absorbance at 725 nm 0.105 0.210 0.315…For question 5 could you find the best value and explain how you arrive to the best value please thank you!In the experiment, the amount of acetic acid in vinegar was determined by titrating with 0.1 M NaOH solution. In the analysis, three trials were performed to obtain more precise result. The table shows the initial and final burette readings for three titrations: Initial Burette Reading (mL) Final Burette Reading (mL) Trial 1 2.9 10.6 Trial 2 10.6 18.1 Trial 3 18.1 25.7 According to the given data, calculate molarity of acetic acid in the commercial vinegar. Please be sure that your answer includes followings; a) moles of NaOH for each trial b) average mole of NaOH c) average mole of acetic acid in 50 mL solution d) average mole of acetic acid in 250 mL solution e) molarity of acetic acid in vinegar.
- DATA AND CALCULATIONS Show all calculations neatly on an attached sheet. Trial 1 Trial 2 Trial 3 70.6849. 68.0749 2.61g 23.25ML O.65ML 22.6mL Mass of flask + vinegar Mass of empty flask Mass of vinegar used Final buret reading Initial buret reading Volume of NaOH used Moles of NaOH used 0.00226 mol Moles of açetic acid titrated Mass of acetic acid titrated Mass % acetic acid in vinegar 5.0%Hello, I'm having issue with this question: "Set up the factor label (dimensional analysis) calculation required to determine the concentration of the NaOH solution via titration of a given amount of KHP. Include all numbers except the given mass of KHP. Use “Mass of KHP” in place of your given mass" I started by converting the mass of KHP to moles, but I'm going wrong somewhere and not getting a correct answer because I think I'm missing numbers somewhere, but I'm not entirely sure. A picture of the titration I'm working from is also attached.How do I calculate the average value from my value and the two other students value ? my value is 4.5 C student one is 23.5 C and second student is 22.0 C. I need help understand this solution
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