An unknown was found to contain 10.80 ug of analyte per liter. A spike of 4.30 ug/L was added to a replicate portion ofunknown. Analysis of the spiked sample gave a concentration of 15.10 pg/L. Find the percent recovery of the spike.% recovery =If the acceptable recovery is specified to be in the range from 96 to 104%, is the recovery of the spike acceptable?yesnohulu山T四回

Answered: Image /qna-images/answer/a0c3e99e-6940-473a-81d2-3c8e1aa065a5.jpg

An unknown was found to contain 10.80 ug of analyte per liter. A spike of 4.30 ug/L was added to a replicate portion of unknown. Analysis of the spiked sample gave a concentration of 15.10 ug/L. Find the percent recovery of the spike. % recovery = If the acceptable recovery is specified to be in the range from 96 to 104%, is the recovery of the spike acceptable? yes no

An unknown was found to contain 10.80 ug of analyte per liter. A spike of 4.30 ug/L was added to a replicate portion of unknown. Analysis of the spiked sample gave a concentration of 15.10 ug/L. Find the percent recovery of the spike. % recovery = If the acceptable recovery is specified to be in the range from 96 to 104%, is the recovery of the spike acceptable? yes no

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

Sample # 1 2 0.2425 0.2160 0.2274 Weighed mass of ascorbic acid (g) volume of KIO3 (mL) 18.86 17.91 17.37 0.02459 0.02462 0.02432 [KIO3] (mol L-1) Mean [KIO3] (based on titration) 0.02451 mol L-1 Standard deviation in the mean [KIO3] mol L-1 Confidence limit for the [KI03] mol L-1 Relative confidence limit for the [KIO3] ppt =
Method of Standard Addition Worksheet You are provided a stock standard solution containing : 0.0500 g/250 mL acetaminophin (APAP). You need to determine how much standard stock is required to prepare the following solutions using 100 mL flasks. Flask 12 3 4 [APAP] added ppm (mg/L) t 10 20 30 40 RI mL Stock 0.1 What method of calibration do you use if you are analyzing a product and the product contains no ingredients that interfere with the instrument response for APAP in the product? on th LI What method of analysis do you use if you are analyzing a product and the product contains ingredients that interfere with the instrument response for APAP in the product? or
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 = ____%
Consider Table 1, which lists the volumes of the Fe3+ and SCN- solutions used for the continuous variation method. Note that each of the stock solutions is 0.002 M before mixing. What are the initial concentrations of Fe3+ and SCN- for solution 4, where the volumes are both 5 mL? [Initial meaning after they are mixed, but before]they reach equilibrium)
Extraction Pre-Lab Question 14 Status: Not yet answered | Points possible: 1.00 Type answer: Suppose you are working with a NaOH stock solution but you need a solution with a lower concentration for your experiment. Calculate the volume (in mL) of the 1.410 M stock NaOH solution needed to prepare 250.0 mL of 0.1273 M dilute NaOH solution. here to search 2 F12 P Cla Hon
please help calculate 1-3 using given data
Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided Determination of the true concentration (ppm Fe) in a water sample using the iron-phenanthroline method. Dilution factor was not taken into account. EX _____ 1ET
using the given values for trial 1, how would you find the mass of pure liquid H2O2?
The KI used in this lab has a concentration of 0.500M. In trials 1-4, 1.0 ml of this solution is combined with 4.0 ml of the H2O2. What is the concentration of the KI in this solution after mixing but before the reaction occurs. ( Enter the result in table 1 on the report sheet) (2 sig figs)
If the endpoints you reached during standardization of your NaOH solution were very precise (relative average deviation if 0.03%) but were all overshot (meaning too much NaOH was added an you passedyour equivalence point), is the reported molar concentration of the acid solution from this experiment greater than , less than or equal to the true concentration? Explain.
What is the solubility of nitrogen gas at 25*C
Following the monograph procedure, a 724-mg of aspirin (MW=180 g/mol) dissolved in 18.5 ml of cold neutralized alcohol. This solution was then initially titrated with 0.101 N sodium hydroxide solution, then later neutralized with 0.104 sulfuric acid. What is the percentage purity of the sample? 1. What is the milliequivalent weight consumed by the acidic titrant? a. 1.5392 g-meq b. 2.0907 g-meq c. 1.4948 g-meq d. 2.1528 g-meq 2. What is the milliequivalent weight consumed by the basic titrant? a. 5.8656 g-meq b. 1.5392 g-meq c. 5.6964 g-meq d. 1.4948 g-meq 3. What is the difference of milliequivalent weight consumed in the reaction? a. -4.1572 g-meq b. 4.3708 g-meq c. 0.5515 g-meq d. 4.1572 g-meq