Homework Answers
Add Answer to:
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.0 L of a 1000.0 mL Cd standard was added to 10.0 mL of solution. The following data were obtained: sorbance of reagent blank- 0.029 Absorbance of sample 0.464 Absorbance of sample plus addition 0.863 What was the concentration of the cadmium in the waste stream sample? Number 1.09x 10 ug/mL Later,...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.0 μL of a 1000.0 μg/mL Cd standard was added to 10.0 mL of the unknown solution. The results obtained are shown in the table. Absorbance Reagent blank 0.024 Sample 0.395 Sample plus addition 0.859 What is the concentration of the cadmium in the waste stream sample? c= μg/mL Later, the analyst...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.010.0 μL of a 1000.0 μg/mL CdCd standard was added to 10.0 mL of the unknown solution. The results obtained are shown in the table. Reagent blank 0.023 Sample 0.342 Sample plus addition 0.749 What is the concentration of the cadmium in the waste stream sample? Later, the analyst learned that the...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.0 μL of a 1000.0 μg/mL Cd standard was added to 10.0 mL of the unknown solution. The results obtained are shown in the table. Absorbance Reagent blank 0.023 Sample 0.498 Sample plus addition 0.714 What is the concentration of the cadmium in the waste stream sample?
Copper was determined in a river water sample by atomic absorption spectrometry and the method of...
Copper was determined in a river water sample by atomic absorption spectrometry and the method of standard additions. For the addition, 250.0 μL of a 1000.0-μg/mL standard was added to 150.0 mL of solution. The following data were obtained Absorbance of reagent blank = 0.023 Absorbance of sample = 0.519 Absorbance of sample plus addition - blank = 1.017 Calculate the copper concentration in the sample. Later studies showed that the reagent blank used to obtain the above data was...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00×10 M nitrite was added. The same color-forming procedure was followed, and the new absorbance was 0.480. What was the concentration...
2. An analyst is measuring cadmium in drinking water using Atomic Absorption Spectroscopy. The analyst prepares...
2. An analyst is measuring cadmium in drinking water using Atomic Absorption Spectroscopy. The analyst prepares a set of calibration standards between 1 ppb and 50 ppb. The calibration curve is linear between these concentrations and the linear least squares equation is y=0.0127x + 0.0710. The analyst then runs a set of 4 drinking water samples. a) [What kind of standardization was used for this calibration curve: standard addition, internal standard, or external standard?] b) For sample 1, the analyst...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml portion of the sample was mi...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00×10 M nitrite was added. The same color-forming procedure was followed, and the new absorbance was 0.480. What was the concentration...
The correct answer is 7.14x10^-4, but I am not sure how to calculate it. The method of standard additions was used to de...
The correct answer is 7.14x10^-4, but I am not sure how to
calculate it.
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-mL portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00x10 M nitrite was added. The same...
Co(ll) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption spectroscopy (AAS). A standard mixture containing 1.90 g Co/mL and 1.53 /g Ti/mL measured by AAS produced...
Co(ll) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption spectroscopy (AAS). A standard mixture containing 1.90 g Co/mL and 1.53 /g Ti/mL measured by AAS produced a signal-to-signal ratio of 2.04 Ti: 1.00 Co A mixture was prepared by combining 4.50 mL of a Ti(IV) solution of unknown concentration with 3.50 mL of a 14.4 ug/mL solution of Co(l1). The absorbance of the mixture at the Ti(IV) wavelength was 0.100 and the absorbance...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.0 L of a 1000.0 mL Cd standard was added to 10.0 mL of solution. The following data were obtained: sorbance of reagent blank- 0.029 Absorbance of sample 0.464 Absorbance of sample plus addition 0.863 What was the concentration of the cadmium in the waste stream sample? Number 1.09x 10 ug/mL Later,...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00×10 M nitrite was added. The same color-forming procedure was followed, and the new absorbance was 0.480. What was the concentration...
2. An analyst is measuring cadmium in drinking water using Atomic Absorption Spectroscopy. The analyst prepares a set of calibration standards between 1 ppb and 50 ppb. The calibration curve is linear between these concentrations and the linear least squares equation is y=0.0127x + 0.0710. The analyst then runs a set of 4 drinking water samples. a) [What kind of standardization was used for this calibration curve: standard addition, internal standard, or external standard?] b) For sample 1, the analyst...
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-ml portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00×10 M nitrite was added. The same color-forming procedure was followed, and the new absorbance was 0.480. What was the concentration...
The correct answer is 7.14x10^-4, but I am not sure how to
calculate it.
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-mL portion of the sample was mixed with 22.00 mL of a colorimetric reagent, and the nitrite was converted to a colored product that produced a blank-corrected absorbance of 0.300. To 51.00 mL of the original sample, 1.00 mL of a standard solution of 1.00x10 M nitrite was added. The same...
Co(ll) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption spectroscopy (AAS). A standard mixture containing 1.90 g Co/mL and 1.53 /g Ti/mL measured by AAS produced a signal-to-signal ratio of 2.04 Ti: 1.00 Co A mixture was prepared by combining 4.50 mL of a Ti(IV) solution of unknown concentration with 3.50 mL of a 14.4 ug/mL solution of Co(l1). The absorbance of the mixture at the Ti(IV) wavelength was 0.100 and the absorbance...
Most questions answered within 3 hours.
-
Test the hypothesis using P-value approach. Be sure to verify
the requirements of the test.
H0:...
asked 32 minutes ago -
For a voltaic cell based on the reaction below, which statement
is correct?
Zn(s)+2H+(aq)→Zn2+(aq)+H2(g)
Zn2+(aq) is...
asked 17 minutes ago -
If 20 g of Na2SO4 is reacted with 20 g of
Al(NO3)3 according to the following...
asked 8 minutes ago -
One difference between periodic and perpetual inventory systems
is:
Multiple Choice Cost of goods sold is...
asked 14 minutes ago -
Using the OSHA web site find the OSHA regulation for personal eye
protection. Write a summary...
asked 13 minutes ago -
In 600 words, answer the following
1) Why has the transfer of defense technologies to domestic...
asked 13 minutes ago -
Balance the following oxidation-reduction equations using redox
methods:
Cu + H+ --------> Cu+ +
H2
asked 34 minutes ago -
For the balanced reaction: CaCl2 (aq) + Na2CO3 (aq) -> CaCO3
(s) + 2 NaCl (aq),...
asked 27 minutes ago -
1. If ln(x)=ln(x)= -0.2 , what does xx equal? Round
your answer to three significant figures. The...
asked 24 minutes ago -
what is the current research being done on the hexokinase
enzyme?
asked 30 minutes ago -
An incline weighing 1,106 kg with its passengers travels uphill
800 meters on a 30 degree...
asked 30 minutes ago -
Let’s assume you want to retire with $1,000,000 in your
investment portfolio. Given that your investment...
asked 30 minutes ago