The absorbance of an iron thiocyanate solution containing 0.005 mg Fe/mL was reported as 0.43 at...
The absorbance of an iron thiocyanate solution containing 0.005 mg Fe/mL was reported as 0.43 at 540 nm using a 1.00 cm cuvette. What will be the absorbance if the solution is diluted to twice its original volume and is placed in a 2 cm cuvette?
Write answer to three decimal places.
Homework Answers
answer in three decimal place
is 0.430
Plz thumbs up if found useful
Add Answer to:
The absorbance of an iron thiocyanate solution containing 0.005
mg Fe/mL was reported as 0.43 at...
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then...
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then transferring to a 50.00 mL volumetric flask with orthophenanthroline as a complexing agent. At a wavelength of 540 nm, the absorbance of the standard was 0.239 in a 1.00 cm cuvette. A 0.149 g sample of an iron ore was crushed and digested in 5 mL of concentrated acid. The digested sample was then transferred to a 10.00 mL volumetric flask and diluted to...
Question 1 12.5 points n ce the ston 159 m nga 1.00 om wette. What w e the The absorbance of an onthocyanate soluti...
Question 1 12.5 points n ce the ston 159 m nga 1.00 om wette. What w e the The absorbance of an onthocyanate solution containing 0.002 mg Fame was reported dited to twice its original volume and placed in 5 cm cuvette? write awer to three decal places
Please I need Answers for ALL THESE QUESTIONS with explanation 2 A solution containing 52.4 mg/100ml...
Please I need Answers for ALL THESE QUESTIONS with
explanation
2 A solution containing 52.4 mg/100ml of B (335 g/mole) has a transmittance of 45.2% in a 1.0 cm cell at 400nm. Calculate the "ABSORPTIVITY" of "B" at this wavelength Inna m L v inole -,.С/.x103 i-moll A Iron is treated with excess color 3.A 2.5ml aliquot of a solution containing 7.9ppm reagent to give a colored "Complex-product"; this was then diluted to 50ml with buffer. is 7,000 L/Mol/cm、.rm /つのフ...
Part C The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted...
Part C The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 μL of the sample and injecting it into a cuvette already containing 2.00 mL of water (total volume is 2.00 mL + 100.0 μL). The absorbance value of the diluted solution corresponded to a concentration of 6.70×10−6 M . What was...
A standard solution of iron was made by weighing 0.075 g of Fe(NH4)2(SO4)2 6(H2O) in 250...
A standard solution of iron was made by weighing 0.075 g of Fe(NH4)2(SO4)2 6(H2O) in 250 mL. Aliquots of this standard solution (see below) were transferred to a 100 mL volumetric flask, pH adjusted with citrate, and reacted with hydroquinone and o-phenanthroline and diluted to volume (100 mL). The absorbance was measured in a 1.0-cm cell using a Genesys 20 Spectrophotometer at 508 nm: Aliquot of standard solution Absorbance 1.0 mL 0.079 2.0 mL 0.163 5.0 mL 0.413 10.0 mL...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proporti...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proportional to concentration? 2. The absorbance of a 2.3lx 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm 3. A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark....
Part C The absorbance of a cationieron) sample solution was measured in a spectrophotometer, but the...
Part C The absorbance of a cationieron) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 L of the sample and injecting it into a cuvette already containing 2.00 mL of water total volume is 200 ml + 100.0 L). The absorbance value of the diluted solution corresponded to a concentration of 7.84x10-6 M. What was the concentration...
(10 pts) The iron content of a well water sample is determined by UV-Vis spectroscopy. A...
(10 pts) The iron content of a well water sample is determined by UV-Vis spectroscopy. A 10.00 mL aliquot of well water is transferred to a 100.0-mL volumetric flask and 20 mL of 0.10 M nitric acid is added to oxidize iron (II) to iron (II). Next 30 mL of a 0.1 M sodium thiocyanate solution is added to form the deep red complex iron (II) thiocyanate. The solution is diluted to volume with DI water. A reagent blank is...
Calibration Curve Standard Number [Fe mg/ml Absorbance 0.001 0.228 2 0.002 0412 0.003 s. 622 0.004...
Calibration Curve Standard Number [Fe mg/ml Absorbance 0.001 0.228 2 0.002 0412 0.003 s. 622 0.004 0802 esos 0.990 Show example calculation for Fe concentration of standard number 1: 5 L Use Excel to construct the calibration curve. Include the regression line and equation. Submit with your report Mass of unknown Fe sample_0.1026 Sample unknown mass diluted to 50 mL Trial Sample solution Absorbance % Fein sample per trial (mL) Dilution Volume ( 50 50 50 21 31 0,532 6...
An unknown solution containing iron at a concentration between 10 and 50 mg/L is now to...
An unknown solution containing iron at a concentration between 10 and 50 mg/L is now to be analyzed. 25 mL of this unknown solution is diluted to 250 mL with the appropriate reagents to form the ferrous - phenanthroline complex. The diluted solution has an absorption of 0.795. What is the concentration in (mg/L) of ferrous ion in the diluted solution? Enter a numeric answer only, do not include units with your answer. part 2 ) What is the concentration...
A standard iron solution was prepared by dissolving 0.0100 g of pure iron in acid then transferring to a 50.00 mL volumetric flask with orthophenanthroline as a complexing agent. At a wavelength of 540 nm, the absorbance of the standard was 0.239 in a 1.00 cm cuvette. A 0.149 g sample of an iron ore was crushed and digested in 5 mL of concentrated acid. The digested sample was then transferred to a 10.00 mL volumetric flask and diluted to...
Question 1 12.5 points n ce the ston 159 m nga 1.00 om wette. What w e the The absorbance of an onthocyanate solution containing 0.002 mg Fame was reported dited to twice its original volume and placed in 5 cm cuvette? write awer to three decal places
Please I need Answers for ALL THESE QUESTIONS with
explanation
2 A solution containing 52.4 mg/100ml of B (335 g/mole) has a transmittance of 45.2% in a 1.0 cm cell at 400nm. Calculate the "ABSORPTIVITY" of "B" at this wavelength Inna m L v inole -,.С/.x103 i-moll A Iron is treated with excess color 3.A 2.5ml aliquot of a solution containing 7.9ppm reagent to give a colored "Complex-product"; this was then diluted to 50ml with buffer. is 7,000 L/Mol/cm、.rm /つのフ...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proportional to concentration? 2. The absorbance of a 2.3lx 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm 3. A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark....
Part C The absorbance of a cationieron) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 L of the sample and injecting it into a cuvette already containing 2.00 mL of water total volume is 200 ml + 100.0 L). The absorbance value of the diluted solution corresponded to a concentration of 7.84x10-6 M. What was the concentration...
(10 pts) The iron content of a well water sample is determined by UV-Vis spectroscopy. A 10.00 mL aliquot of well water is transferred to a 100.0-mL volumetric flask and 20 mL of 0.10 M nitric acid is added to oxidize iron (II) to iron (II). Next 30 mL of a 0.1 M sodium thiocyanate solution is added to form the deep red complex iron (II) thiocyanate. The solution is diluted to volume with DI water. A reagent blank is...
Calibration Curve Standard Number [Fe mg/ml Absorbance 0.001 0.228 2 0.002 0412 0.003 s. 622 0.004 0802 esos 0.990 Show example calculation for Fe concentration of standard number 1: 5 L Use Excel to construct the calibration curve. Include the regression line and equation. Submit with your report Mass of unknown Fe sample_0.1026 Sample unknown mass diluted to 50 mL Trial Sample solution Absorbance % Fein sample per trial (mL) Dilution Volume ( 50 50 50 21 31 0,532 6...
Most questions answered within 3 hours.
-
COnsider the following elements; Li Al Mg I S N
a) Most Metallic?
b) Least Metallic?...
asked 7 minutes ago -
What are the differences of the development in C.elegans and of
the development of snails?
asked 9 minutes ago -
4) If you were to distill acetone in a lab located in the
Colorado Rocky Mountains...
asked 12 minutes ago -
design the following rectangular floor beam for a
building.
The beam has a simple span of...
asked 14 minutes ago -
i have a c++ program where I take in a string the use
map and iterators...
asked 13 minutes ago -
A Ferris wheel with radius 14.0 m is turning about a horizontal
axis through its center...
asked 24 minutes ago -
Quantitative: Fick’s first law helps us understand the
relationship between a molecule’s concentration gradient (the
difference...
asked 26 minutes ago -
A battery provides a voltage of 8.00 V and has unknown internal
resistance Rint. When the...
asked 30 minutes ago -
The statement of financial statement
is based on the following equation:
Assets = Liabilities + Equity...
asked 44 minutes ago -
In a regular 2D Cartesian gradient echo imaging experiment, how
does ΔB0 (e.g. chemical shift and...
asked 49 minutes ago -
list one corporate scenario for which you think the business
security policy would require the Delete...
asked 59 minutes ago -
What was the "Concert of Europe" intended to accomplish? Why
did it largely disintegrate in the...
asked 1 hour ago