HomeworkLib
Question

A sample of pure water was spiked with 0.4500.450 ng/mL silver ion. Ten replicate determinations of...

A sample of pure water was spiked with 0.4500.450 ng/mL silver ion. Ten replicate determinations of the spiked water sample gave 0.4600.460, 0.4400.440, 0.4170.417, 0.4030.403, 0.4440.444, 0.4240.424, 0.4280.428, 0.4320.432, 0.4100.410, and 0.3950.395 ng/mL silver ion. Determine the mean percent recovery of the spike and the detection limit of the analytical method used for the silver ion determination.

mean percent recovery:

%%

detection limit:

ng/mL

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
A sample of pure water was spiked with 0.4500.450 ng/mL silver ion. Ten replicate determinations of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Species of arsenic found in drinking water include AsO33- (arsenite), AsO43- (arsenate), (CH3)2AsO2-(dimethylarsinate),...

    Species of arsenic found in drinking water include AsO33- (arsenite), AsO43- (arsenate), (CH3)2AsO2-(dimethylarsinate), and (CH3)AsO32- (methylarsonate). Pure water containing no arsenic was spiked with 0.40 µg arsenate/L. Seven replicate determinations gave 0.35, 0.35, 0.40, 0.36, 0.39, 0.37, and 0.36 µg/L. (a) Find the mean. µg/L Find the standard deviation. µg/L Find the mean percent recovery of the spike. % (b) Find the concentration detection limit. µg/L

  • a, b, and c please 1. A determination of silver in waste water was done with...

    a, b, and c please 1. A determination of silver in waste water was done with a method involving spling silver into the sample. A sample originally containing no silver was run six times with the following protocol. Each 100.0 mL sample was spiked with 200 g of silver and mixed well. From each of these prepared samples, a 5.00 mL aliquot was digested and the following results were obtained ug Ag found: 9.8, 9.2.9.3,9.5, 10.1, 8.9, 96, 9.4 a....

  • A 1.00 mL blank serum sample was spiked with 46.9×10−9 g of lisinopril, an angiotensin-converting enzyme...

    A 1.00 mL blank serum sample was spiked with 46.9×10−9 g of lisinopril, an angiotensin-converting enzyme inhibitor primarily used in the treatment of hypertension. The serum was prepared and analyzed using the normal laboratory method for the analysis of lisinopril that had previously been calibrated with aqueous lisinopril standards. The analysis of the spiked sample showed a measured lisinopril concentration of 45.8 μg/L. What is the percent recovery for lisinopril?

  • A 55.00 mL sample of bottled water is titrated with 0.00033000 M silver nitrate to determine...

    A 55.00 mL sample of bottled water is titrated with 0.00033000 M silver nitrate to determine the concentration of dissolved chloride. The end point is determined electrochemically. At the endpoint it was determined that 17.26 mL of titrant was used. What is the molarity of chloride in the original sample?

  • Lab Report: Determination of Kc for a Complex Ion Formation tube 2.00e-3 Fe3+ (mL) 2.00E-3M SCN-...

    Lab Report: Determination of Kc for a Complex Ion Formation tube 2.00e-3 Fe3+ (mL) 2.00E-3M SCN- (mL) water (mL) initial conc. Fe3+ initial conc. SCN- 1 5.00 5.00 0 1.00e-3M 1.00E-3M 2 5.00 4.00 1.00 1.00E-3M 8.00E-3M 3 5.00 3.00 2.00 1.00E-3, 6.00E-3M 4 5.00 2.00 3.00 1.00E-3M 4.00E-3M 5 5.00 1.00 4.00 1.00E-3M 2.00E-3M 10ml of 0.200M Fe3+, 2.00ml of 0.00200M SCN-, AND 8.00ml of water results in an eq. [FeSCN2+] IN Standard Soln.:2.00E-4M Could you please explain how...

  • need hep with these two questions! here is the information for the lab K2Cr₂O + H₂...

    need hep with these two questions! here is the information for the lab K2Cr₂O + H₂ C₂04 2H2O sklor (C204) [H202₂/2 H2otca 2k12 2 cr=x2 (+8ly kzcrgo7+ I 142 C204-21420 2 k cellow). (1) 2 - 2 H2O toc -=S7 30-4521 2. Calculate the theoretical yield of K[Cr(C,0.),(H,0), 2H,0. 3. What is the theoretical percentage by weight of Cr in K[Cr(C,0.),(H,0), 2H,0? using the spectrophotometer at your desk, at the wavelength of maximum absorbance of the blue-green chromium ion, measure...

  • All of the solutions used today can be washed down the sink with water. Solid waste...

    All of the solutions used today can be washed down the sink with water. Solid waste should be thrown in the bin. Experimental This experiment is to be carried out individually NOTE: Failure to follow the correct procedures as explained in Skill 4 will result in wildly inaccurate results. The notes below do NOT give a full description of the techniques. 0 2 Standardisation of 0.1 M sodium hydroxide with the primary standard potassium hydrogenphthalate Part A (Al) In a...

  • help please? this was the only other information given REPORT SHEET Determination of the Solubility-Product Constant...

    help please? this was the only other information given REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...

  • For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2

    For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2....the problem is that if I don't boil it for that long and (30 min) b/c of not enough time but I put the water I boiled for 1/2 hr aproximately into a NaOH bottle with a CO2 absorber and stored it there for a few days. I would assume that I would have to boil the water again...but...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT