Which of the following is the correct sequence of weighing using an analytical balance? I. Press Tare II. Weigh container and sample II. Weigh container (A) II, I, II B) II, I, II I, II, II D II, III, I
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- Which of the following is the Eofect'sequente t weighing using an Francis A. Santos analytical balance? I. Press Tare II. Weigh container and sample III. Weigh container A) II, II, I B I, II, II C II, I, I (D) II, I, II2. Quantitative analysis student Analytical analyzed an ore sample for its lead content and obtained a mean of 4.75% Pb for five measurements. If the certified true value is 4.50%, what is the (a) percent error? (b) percent accuracy?Hi! I am having difficulty finishing and finding out the rest of tables in excel. I am trying to find the Calcium Carbonate in an Eggshell. I have put up the excel sheet I have done with the given data already inputed, I just need to find out the rest. Thank you so much!
- phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&- 8r 10 13 140 15 16 20 11 12 17 18 19 20 A Moving to another question will save this response. Quèstion 6 Select the statement that is not supported by the following equation: q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal) The total change in heat is the sum of the changes in heat of water and a metal. Energy is conserved. Energy is transferred between water and a metal. Energy is lost during a calorimetry experiment. A Moving to another question will save this response. hp & %23 9. 6. 00 进31. Develop a detailed separation scheme for the separation and determination of the percent composition of your sample which will be a mixture of NaCl, NH.CL, and sand. You are expected to use the properties of the components listed below and some of the techniques listed in the table in the pre-lab queries (and used in Separations I). Keep in mind that any chemistry student should be able to pick up your scheme, understand it, and use it to complete the separation and calculation of % composition. Place the scheme on a separate sheet of paper. Component Solubility (@25°C) Melting Point Hardness sodium chloride, NaCl 35 g/100 mL water 801°C soft ammonium chloride, NH&Cl 37 g/100 mL water sublimes 350°C soft sand, SIQ2 insoluble 1600°C hard Example of compounds in a container. Naci NH.CI sio2 Exploring the Chemical World, PGCC, 2003 4 RESULTS Show all calculations with units in this space.Titration of Vinegar Experimental Data Trial 1 Trial 2 Initial Buret Reading 0.05 mL 0.02 mL Final Buret Reading 25.25 mL 23.22 mL Volume of base used Molarity of base used 0.1045 M 0.1045 M Volume of vinegar used 5.00 mL 5.00 mL
- Name: Date: Section: Data Report Sheet: Analysis of an Unknown Chloride Unknown # -2 Molarity of Standard Ag(NO), 5.2167x10 M Trial I Trial II Trial III Mass of Unknown 0.237 o. 232 g g Initial Burette Reading 0.00 mL 7.90 mL mL Final Burette Reading 31.00 mL 42.00 mL mL Vol. Ag(NO3) Added 31.00 mL 34.10 mL mL Moles Ag(NO,) 1.617177y10 mol. 1,7789 v10 mol. Moles CI 1.617177x103mdl. Mass Cl 0.05741 8 0g 24.22 % 27.22% Cl in Unknown Average % Cl in unknown 25.720%Please help me with answering the second part. I have tried 1.06, 1.02, 0.98469, 0.985. Thank you for your help in advance1Anna Divi, a young and ambitious researcher, is planning to put her very own research laboratory. However, she does not have the funds for this to happen. She then approached Alan Read, CEO of a well-known funding agency, to help her pursue her dream laboratory. Before Alan considers Anna's proposal, Anna must perform an experiment on determining the melting point of solutions. She must have an accurate result with a percent error not greater than 3%. The data on the experiment is given below. Help Anna achieve her goals by performing the necessary calculations below. Table 1. Data on the determination of the melting point of the solution. Parameters Values Theoretical freezing point of solvent, °C 65.8 Freezing point depression constant (kç) of solvent, °C m-1 2.49 mass of solute, g 0.250 mass of solvent, g 2.100 molar mass of solute, g mol-1 148.21 A. Calculate the molality of the solution. B. Calculate the theoretical freezing point of the solution. C. Anna performed the same…
- What is an analytical balance?QUESTION 16 Match the correct choices with the given. For gravimetric analysis, use this data to answer the questions. |Trial 1 0.6020 g 24.8405 g 24.8451 g 24.8422 Trial 2 0.5021 g 22.8165 g 22.8165 g Trial 3 0.5018 g 22.8169 g 22.8169 g |Weight of Sample Weight of Crucible and Ba$O, 8 24.8422 g Constant Weight of Crucible & Sample 24.8422 g 22.8165 g 22.8169 g Weight of Crucible 24.3181 22.3593 g 22.3641 g 24.3160 g 24.3142 g 24.3142 g 24.3142 g 24.3142 g 22.3523 g 22.3534 g 22.3532 g 22.3532 g 22.3612 g 22.3605 g 22.3605 g 22.3605 g Constant Weight of Crucible 22.3532 g 22.3605 g Weight of BaSo, |% so,2- Average Standard deviation Relative standard deviation A. 2.65 Average of the % (w/w) SO42- B. to decompose the solid and form a compound of known composition and to remove the solvent and any non-volatile species Standard deviation of the % (w/w) So2- Relative standard deviation of the C. reprecipitation % (w/w) SO42- D. formation of small crystals This is a drastic but effective…2.00 mL OF 5.80 x10-"M AGNO g 245.0 mL of 3.35 X10 M NazS and + Na, Scaas 2 NANO3 tazy 248.19 1549 2709 2 Ag NO3 78.19 Nans Agzs 2 NANO3 inirial Change Final