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Find the detection limit for a low concentration of analyte in mu M (to 2 significant...
Low concentrations of warfarin near the detection limit gave the dimensionless instrument readings: 203.3, 172.3, 160.3,...
Low concentrations of warfarin near the detection limit gave the dimensionless instrument readings: 203.3, 172.3, 160.3, 172.3, 217.3, 158.1, 221.1. 199.7, 132.7, and 203.5. Ten blanks had a mean reading of 56.3. The slope of the calibration curve is 3.55 x 10' M-!. Estimate the signal and concentration detection limits and the lower limit of quantitation for warfarin. signal detection limit: concentration detection limit: lower limit of quantitation:
Help!!! :( Low concentrations of thallium near the detection limit gave the following dimensionless instrument readings:...
Help!!! :(
Low concentrations of thallium near the detection limit gave the following dimensionless instrument readings: 206.9,173.7.163.9,175.9, 220.9.161.7, 224.7, 203.3,136.3, and 207.1. Ten blanks had a mean reading of 42.1. The slope of the calibration curve is 1.76 times 10^9M^-1. Estimate the signal and concentration detection limits and the lower limit of quantitation for thallium. Signal Detection Limit: Concentration Detection Limit: Lower Limit of Quantitation:
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give si...
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give signals of 1.10, 1.90, 1.20, 1.30, 1.60, 1.70, and 1.70 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the standard deviation of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the minimum detectable concentration (detection limit in ppm) with appropriate...
A student measured the concentration of a metal in soil samples with FAAS. Reagent blanks give...
A student measured the concentration of a metal in soil samples with FAAS. Reagent blanks give signals of 1.90, 0.60, 1.60, 0.50, 1.70, 0.90, and 0.60 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Calculate the standard deviation of blank signals with appropriate significant figures. Calculate the minimum detectable concentration (detection limit in ppm) with appropriate significant figures.
A containment pond has a base thickness of 1.2 m. The leachate held by the base...
A containment pond has a base thickness of 1.2 m. The leachate held by the base has a sulfate concentration of 1800 mg/L. The facility is known to leak its offensive fluids into that underlying aquifer. which has a hydraulic conductivity of 10 m/d and effective porosity of 0.35. Two plezometers 500 m apart installed in upstream of the facility have average seasonal head readings of 20 m and 22 m. There is an observation well installed just downstream of...
Find a Z-score such that 2% of the total area is to the left of z....
Find a Z-score such that 2% of the total area is to the left of z. (Hint: Use the table backwards.) Click here to view page 1 of the table. Click here to view page 2 of the table. Choose the closest z-score such that 2% of the total area is to the left of z. Z= (Round to two decimal places as needed.) X- Area Under a Normal Curve to the Left of z, where z= 0 z 0.00...
these two questions im having trouble on. Provides the tables for both M 6.2.75 се Use...
these two questions im having trouble on. Provides the tables
for both
M 6.2.75 се Use a standard normal distribution table to obtain the Z-score that has an area of 0.975 to its right. Click here to view page 1 of the normal distribution table, As Click here to view page 2 of the normal distribution table. Za St (Round to two decimal places as needed.) normal distribution page 1 Areas under the standard normal curve Second decimal place in...
Low concentrations of warfarin near the detection limit gave the dimensionless instrument readings: 203.3, 172.3, 160.3, 172.3, 217.3, 158.1, 221.1. 199.7, 132.7, and 203.5. Ten blanks had a mean reading of 56.3. The slope of the calibration curve is 3.55 x 10' M-!. Estimate the signal and concentration detection limits and the lower limit of quantitation for warfarin. signal detection limit: concentration detection limit: lower limit of quantitation:
Help!!! :(
Low concentrations of thallium near the detection limit gave the following dimensionless instrument readings: 206.9,173.7.163.9,175.9, 220.9.161.7, 224.7, 203.3,136.3, and 207.1. Ten blanks had a mean reading of 42.1. The slope of the calibration curve is 1.76 times 10^9M^-1. Estimate the signal and concentration detection limits and the lower limit of quantitation for thallium. Signal Detection Limit: Concentration Detection Limit: Lower Limit of Quantitation:
A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give signals of 1.10, 1.90, 1.20, 1.30, 1.60, 1.70, and 1.70 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the standard deviation of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the minimum detectable concentration (detection limit in ppm) with appropriate...
A containment pond has a base thickness of 1.2 m. The leachate held by the base has a sulfate concentration of 1800 mg/L. The facility is known to leak its offensive fluids into that underlying aquifer. which has a hydraulic conductivity of 10 m/d and effective porosity of 0.35. Two plezometers 500 m apart installed in upstream of the facility have average seasonal head readings of 20 m and 22 m. There is an observation well installed just downstream of...
Find a Z-score such that 2% of the total area is to the left of z. (Hint: Use the table backwards.) Click here to view page 1 of the table. Click here to view page 2 of the table. Choose the closest z-score such that 2% of the total area is to the left of z. Z= (Round to two decimal places as needed.) X- Area Under a Normal Curve to the Left of z, where z= 0 z 0.00...
these two questions im having trouble on. Provides the tables
for both
M 6.2.75 се Use a standard normal distribution table to obtain the Z-score that has an area of 0.975 to its right. Click here to view page 1 of the normal distribution table, As Click here to view page 2 of the normal distribution table. Za St (Round to two decimal places as needed.) normal distribution page 1 Areas under the standard normal curve Second decimal place in...
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