Three labs were contracted to measure the concentration of a 5.50 ppm Ca2+ standard solution. They each measured the solution 3 times, and their results are as follows: Measurement 1 Measurement 2 Measurement 3 5.47 ppm 5.54 ppm 5.50 ppm Laboratory 1 Laboratory 2 5.32 ppm 5.44 ppm 5.56 ppm Laboratory 3 5.61 ppm 5.62 ppm 5.60 ppm Select ALL of the TRUE statements about the meassurement capabilities of these labs. Lab #3 was the most precise. Lab #1 was the most precise. Lab #1 was the most accurate. OLab #2 was the most precise. Lab #2 was the most accurate. Lab #3 was the most accurate.

Three labs were contracted to measure the concentration of a 5.50 ppm Ca2+ standard solution. They each measured the solution 3 times, and their results are as follows: Measurement 1 Measurement 2 Measurement 3 5.47 ppm 5.54 ppm 5.50 ppm Laboratory 1 Laboratory 2 5.32 ppm 5.44 ppm 5.56 ppm Laboratory 3 5.61 ppm 5.62 ppm 5.60 ppm Select ALL of the TRUE statements about the meassurement capabilities of these labs. Lab #3 was the most precise. Lab #1 was the most precise. Lab #1 was the most accurate. OLab #2 was the most precise. Lab #2 was the most accurate. Lab #3 was the most accurate.

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 compound “X” is regulated by health Canada at 2 ug/L in drinking water (maximum allowable concentration). What will be the minimum cut-off level of your analytical method to analyze that compound “X”? How do you determine the cut-off level of your method?
Six 50.0 ml volumetric flask 1 through 6 are labeled. 10.00 ml of 2.00 x 10-1 M Fe(NO3)3 solution was then pipet into each volumetric flask. A 1.00,2.00,3.00,4.00 and 5.00ml of 2.00 x 10-3M NaSCN solution was then pipetted to flask 2 through 6 respectively. A sufficient amount of 0.10 M nitric acid was then added to each flask to make each a total volume of 50.00ml. Hint M1V1=M2V2 a)what would be the concentration of Fe(NO3)3 in 0.10M HNO3? b)what would be the concentration of NaSCN in 0.10M HNO3?
In 2001, EPA adopted a lower standard for arsenic in drinking water that applies to both community water systems and non-transient non-community water systems. The new arsenic standard is 10.0 ppb. Please estimate the highest molarity of arsenic (in μM) in drinking water that can meet the standard of EPA? The density of pure water is 1.000 g/mL. ___________ μM?
I am not sure on how to complete this problem and need some help. Thank you!
© Macmillan Learning Five standard solutions of a newly discovered inorganic salt were used to create a calibration curve. The density (g/mL) of each solution was plotted on the y-axis versus the % (w/v) concentration on the x-axis. The calibration curve was linear and fitted with the following best-fit line. y = 1.17x + 0.188 A student is asked to analyze a solution of this salt with a density of 4.00 g/mL. What is the concentration, in %(w/v), of the unknown salt solution? concentration: % (w/v)
A student prepares a 3.2M aqueous solution of benzoic acid (C,H,CO,H). Calculate the fraction of benzoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. | % x10
Using recrystallization techniques, a student attempts to purify 0.50 g of compound H. Based on the solubility of H in the chosen solvent at collection temperature, the maximum percent recovery is 82%. The student obtains 0.396 g of purified crystals. What is their percent recovery? Group of answer choices 41% 64% 79% 82% 97% none of these
Calculate the initial concentrations for all the solutions. The concentration of stock solutions are as listed below the compound.
Saved Normal BIIIU fxl Ix Actual mass used in solution prep (g) Volume solution prepared Measured conductivity (uS/cm) Substance 0.1 g Naci 0.1003 100 mL 1149 0.1 g Nal 0.10 100 ml 419 Calculate the mass of Nal that would be necessary to yield the same conductivity as the NaCl solution. Clearly show these calculations in your lab notebook. Saved T BII U X X + fr Normal
Which answer choice best describes a heterogeneous mixture? A solution with different sized particles A solution that exhibits the Tyndall effect Mixtures which have a non-uniform composition Mixtures which have a uniform composition
You are creating a standard curve for a protein experiment. You have to stock solution of BS a and would like to obtain dilutions. Explain how you would create a 1:1000 dilution of your protein stock solution.
4. Calculate the concentration of the following analyte, expressed in ppm. Identify the type of analysis and the type of constituent in each situation: a. 325 mg of ferrous sulfate in 1.80 grams of iron supplement tablet b. 8 ug of Cr in 0.08 grams of dust ·