2. The police found a small zip-lock bag containing 15.36 gram of a powder on the victim's nightstand. To find out what the substance was, the forensic scientist added it to 80-ml solution of 1.0 mol/L. NaCl and analyzed the products. . One product was a precipitate with the mass of 10.46g . The other product was sodium nitrate. The lab technician quickly ran the analysis on the precipitate and found the molar mass of this precipitate is 278.10 g/mol. What could be the name and formula of the precipitate? Write the balanced chemical equation and net ionic equation for the reaction, including the states. Determine the limiting and excess reactant in b).

2. The police found a small zip-lock bag containing 15.36 gram of a powder on the victim's nightstand. To find out what the substance was, the forensic scientist added it to 80-ml solution of 1.0 mol/L. NaCl and analyzed the products. . One product was a precipitate with the mass of 10.46g . The other product was sodium nitrate. The lab technician quickly ran the analysis on the precipitate and found the molar mass of this precipitate is 278.10 g/mol. What could be the name and formula of the precipitate? Write the balanced chemical equation and net ionic equation for the reaction, including the states. Determine the limiting and excess reactant in b).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

A 0.678-g sodium carbonate sample with 98.6% purity requires 36.8 mL of sulfuric acid solution to complete neutralization. What is the molarity of the sulfuric acid solution? MW Na2CO3 = 106.0 g/mol
A solution is initially 0.10 M in Mg2*(aq) and 0.10 M in Fe2* Mg(OH)2 first precipitates? Ksp (Mg(OH)2) = 6.0 x 10-10; Ksp(Fe(OH)2) = 7.9 x 10-16 your answer in E-notation, rounded to 2 significant digits. *(aq). A solution of NaOH is slowly added. What is the concentration of Fe2+ when %3D Provide
Part A A 0.11 NH3. mol sample of AGNO,(s) is dissolved in 1.00 L of 1.50 M How many grams of KI can be dissolved in this solution without a precipitate of AgI(s) forming? Express your answer using two significant figures. ? x" |X| х-10п 13 |1.3 • 10 m = g Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
The steps for determining the concentration of a sample of hydrochloric acid are listed below :Step (1): A 0.1038 M standard sodium carbonate solution was prepared by dissolving 2.750 g ofanhydrous sodium carbonate solid in deionised water and made up to 250.0 cm3.Step (2): 25.0 cm' of the standard solution obtained in Step (1) was transferred to a clean conical flask andthen a few drops of methyl orange were added.Step (3): The sample of hydrochloric acid was put into a burette. The standard solution in the conicalflask was titrated with the hydrochloric acid.Step (2) and Step (3) were repeated for several times. The table below shows the results of the titrations:Trial I 2 3 4Final burette reading/ cm330.85 28.75 28.30 31.35 27.25Initial burette reading/ cm32.00 1.50 1.00 3.00 0.00(a) Describe the procedure in preparing the standard sodium carbonate solution in Step (I). (b) State the colour change at the end point of the titration. (c) Calculate a reasonable average for the volume…
a student separated 7ml of ethyl acetate and butyl acteta via distillation. At the end of the distillation the student obtained 2.7 grams of ethyl acetate. Given that the density of ethly acetate is 0.902g/ml, what is the percent recovery of ethyl acetate
Compare statement A with B. Indicate whether Statement A is (Greater than, Less than, Equal, or Cannot be Compared) with Statement B Statement A: Mass of precipitte after occlusion Statement B: Mass of precipitte after peptization
Determine the precipitate in the following reaction. If a precipitate is not formed, select "no precipitate formed". BaCl, + Cas - Bas + CaCl, O Bas O no precipitate formed O Cas O BaCl2 O CaCl2 % & 4. 6. 7 8 y
Please don't provide handwritten solution .....
Give the major product for the following reaction.
Need help with this question. Thank you :)
there isn’t a block for .155 … Can you please help line them up exactly in the correct order and exact unit that are in the bank below?
ame: Table 2. Determination of Acetylsalicylic Acid in Aspirin. 1) Aspirin Brand (and amount of acetylsalicylic acid on label) 2) Average molar concentration of NaOH Solution B (from Part A) 3) 4) 5) 6) Mass of aspirin tablet Mass of pulverized aspirin sample Initial buret reading Final buret reading 7) Volume of NaOH Solution B added 8) Moles of NaOH 9) Moles of acetylsalicylic acid in sample 10) Mass of acetylsalicylic acid in sample 11) Amount of acetylsalicylic acid per tablet T₁ 1.264 12) Mean amount of acetylsalicylic acid per tablet 13) Standard deviation for acetylsalicylic acid per tablet 14) RSD for acetylsalicylic acid per tablet 15) Relative percent error (%) 16) Is the mean amount per tablet acceptable? (Yes or no.) 0.000153 * 180. Kg Imol T₂ √3 1.261 1-259 Seat กา Basic 8.25 mg 0.0975 M Trial 1* Trial 2 *Show all calculations related to Trial 1, standard deviation, RSD, and relative % error. Mole of NaOH (0.0975) (14.3) = 0.000139 (0.0975) (15.7) = 8.000 253 23 0.0975)…