A caretenoid pigment with a molar mass of 548 g/mol has Ɛ = 15,500 L/mol-cm at...
A caretenoid pigment with a molar mass of 548 g/mol has Ɛ = 15,500 L/mol-cm at λ = 600 nm. A sample of this pigment is first dissolved in 30 mL of hexane and then diluted to a total volume of 250.0 mL. A 10 mL aliquot is removed and diluted to 500 mL. This final dilution has A = 0.489 when measured at λ = 600 nm in a cell path length = 2.00 cm. Calculate the mass of pigment in the original sample.
A. 0.432 g
B. 2.16 mg
C. None of those
D. 108 mg
E. 1.58 x 10-5 mg
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
A caretenoid pigment with a molar mass of 548 g/mol has Ɛ =
15,500 L/mol-cm at...
A caretenoid pigment with a molar mass of 548 g/mol has Ɛ = 15,500 L/mol-cm at...
A caretenoid pigment with a molar mass of 548 g/mol has Ɛ = 15,500 L/mol-cm at λ = 600 nm. A sample of this pigment is first dissolved in 30 mL of hexane and then diluted to a total volume of 250.0 mL. A 10 mL aliquot is removed and diluted to 500 mL. This final dilution has A = 0.489 when measured at λ = 600 nm in a cell path length = 2.00 cm. Calculate the mass of...
Question 5 Not yet answered Points out of 1.00 P Flag Question A caretenoid pigment with...
Question 5 Not yet answered Points out of 1.00 P Flag Question A caretenoid pigment with a molar mass of 548 g/mol has € = 15,500 L/mol-cm at X = 600 nm. A sample of this pigment is first dissolved in 30 mL of hexane and then diluted to a total volume of 250.0 mL. A 10 mL aliquot is removed and diluted to 500 ml. This final dilution has A = 0.489 when measured at 1 = 600 nm...
An unknown amount of a compound with a molecular mass of 274.11 g/mol 274.11 g/mol is...
An unknown amount of a compound with a molecular mass of 274.11 g/mol 274.11 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 325 nm 325 nm is 0.523 0.523 in a 1.000 cm cuvet. The molar absorptivity for this compound at 325 nm 325 nm is ?...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 343 nm is 0.456 in a 1.000 cm cuvette. The molar absorptivity for this compound at 343 nm is €343 = 5721 M-?cm-1. What is the concentration...
A 5.0067 g sample of Na2CrO4 (MW = 161.97 g/mol) is dissolved in 250.0 mL of...
A 5.0067 g sample of Na2CrO4 (MW = 161.97 g/mol) is dissolved in 250.0 mL of water. Assume the solution has a density of 1.00 g/mL. A 50.0 mL aliquot of the solution is then diluted to a final volume of 250.0 mL. What is the concentration of Na+ in the diluted solution in units of parts per million (ppm)?
An unknown amount of a compound with a molecular mass of 284.04 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 284.04 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 347 nm is 0.472 in a 1.000 cm cuvet. The molar absorptivity for this compound at 347 nm is ?347=6023 M−1cm−1. What is the concentration of the...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in a 10-mL volumetric flask. A 1.00-mL aliquot of this solution is transferred to a 25-mL volumetric flask and e water is added to dilute to the mark. The absorbance of this diluted solution at 339 nm is 0.517 in a 1 cm cuvette. The molar absorptivity for this compound at 339 nm is esso- 5835 M-1cm-1 (a) What is the concentration of the compound...
An unknown amount of a compound with a molecular mass of 259.45 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 259.45 g/mol is dissolved in a 10-mL volumetric flask. A 1,00-mL aliquot of this solution is transferred to a 2 L volumetric flask and o the mark. The absorbance of this diluted solution at 347 nm is 0.468 in a 1 cm cuvette. The molar (a) What is the concentration of the compound in the cuvette? Number b) What is the concentration of the compound in the 10-ml flask?...
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL...
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL of water. Assume the solution has a density of 1.00 g/mL What is the concentration of Na* (MW = 22.9898 g/mol) in the solution in units of molarity (M)? concentration: М What is the concentration of Na+ in the solution in units of parts per thousand (ppt)? concentration: ppt A 50.0 mL aliquot of the solution is then diluted to a final volume of...
You have a 5 mg/ml solution of caffeine (molar mass 194.2 g/mol)
You have a 5 mg/ml solution of caffeine (molar mass 194.2 g/mol). You diluted that solution 200 times (200 fold),. Calculate the final concentration (in uM, micromol/t) of caffeine after dilution 12.9 uM 19.4 uM 129 uM 194.2 uM
Question 5 Not yet answered Points out of 1.00 P Flag Question A caretenoid pigment with a molar mass of 548 g/mol has € = 15,500 L/mol-cm at X = 600 nm. A sample of this pigment is first dissolved in 30 mL of hexane and then diluted to a total volume of 250.0 mL. A 10 mL aliquot is removed and diluted to 500 ml. This final dilution has A = 0.489 when measured at 1 = 600 nm...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 343 nm is 0.456 in a 1.000 cm cuvette. The molar absorptivity for this compound at 343 nm is €343 = 5721 M-?cm-1. What is the concentration...
An unknown amount of a compound with a molecular mass of 270.93 g/mol is dissolved in a 10-mL volumetric flask. A 1.00-mL aliquot of this solution is transferred to a 25-mL volumetric flask and e water is added to dilute to the mark. The absorbance of this diluted solution at 339 nm is 0.517 in a 1 cm cuvette. The molar absorptivity for this compound at 339 nm is esso- 5835 M-1cm-1 (a) What is the concentration of the compound...
An unknown amount of a compound with a molecular mass of 259.45 g/mol is dissolved in a 10-mL volumetric flask. A 1,00-mL aliquot of this solution is transferred to a 2 L volumetric flask and o the mark. The absorbance of this diluted solution at 347 nm is 0.468 in a 1 cm cuvette. The molar (a) What is the concentration of the compound in the cuvette? Number b) What is the concentration of the compound in the 10-ml flask?...
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL of water. Assume the solution has a density of 1.00 g/mL What is the concentration of Na* (MW = 22.9898 g/mol) in the solution in units of molarity (M)? concentration: М What is the concentration of Na+ in the solution in units of parts per thousand (ppt)? concentration: ppt A 50.0 mL aliquot of the solution is then diluted to a final volume of...
Most questions answered within 3 hours.
-
A speeding car is traveling along a straight road with a
constant speed of 100 km/hour....
asked 13 minutes ago -
When 60.1 gg of calcium is reacted with nitrogen gas, 31.7 gg of
calcium nitride is...
asked 17 minutes ago -
The random variable X is exponentially distributed, where X
represents the time it takes for a...
asked 32 minutes ago -
a) Write a verilog module for 1:4 Demultiplexer using verilog
primitives.
b) Design 1-to-4 DEMUX using...
asked 27 minutes ago -
MATLAB
write a MATLAB function (1) output a third-order polynomial
function with the coefficients as the...
asked 40 minutes ago -
A z-score
communicates a raw score’s "relative standing"
under the normal curve in relation to:
asked 48 minutes ago -
An object is vibrating on a spring with the following equation
of motion:
?=(30 ??)cos((2?)/(160)?)
a)...
asked 48 minutes ago -
Vulcan Flyovers offers scenic overflights of Mount St. Helens,
the volcano in Washington State that explosively...
asked 50 minutes ago -
If organizations do not adapt fast enough and move incrementally
from the twentieth-century model to the...
asked 51 minutes ago -
A helium balloon with 2.5L of gas has a gauge pressure of 10,000
Pa. The balloon...
asked 55 minutes ago -
What is responsible for Jupiter's enormous magnetic field?
asked 1 hour ago -
At the end of the year, a company offered to buy 5,000 units of
a product...
asked 1 hour ago