Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Physics or Chemistry
spectroscopy or light measurement
"...the absorbance at 260 nm was measured." (would it be were or was here? how would you know?)
1 answer
The subject is
absorbance
. Since it is singular, the verb must be
was
.
You can
ask a new question
or
answer this question
.
Similar Questions
A 0.200 g sample containing Cu is dissolved, and a diethyldithiocarbamate
coloured complex is formed. The solution is then
Top answer:
The easy way to do this is to work in g and A units. You know 0.5g sample x 0.240E-2 = 1.2E-3 g Cu.
Read more.
A solution of a colored substance that is known to follow Beer's law has an absorbance of 0.085 when measured in a cell 1 cm in
Top answer:
Twice the concentration means twice the absorbance so 2*0.085 = ?
Read more.
The absorbance of a 6.3x10^-5M solution of an iron complex was measured to be 0.328 at the optimum wavelength. A second solution
Top answer:
Absorbance = kC Plug in A and C from the first run and calculate k. Use k and absorbance of second
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
Look several posts below by UN and see my answers to his/her similar question. Only the numbers have
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
Fe(NO3)3 + SCN^- ==> FeSCN^+2 mols Fe(NO3)3 = M x L mols SCN^- = M x L. Obviously, SCN^- is the
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
i think you have omitted part of the procedure but the following may get you started. For the
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
Use Beer' law with the standard to find a in A=abc, then use the trial data to find c given A, a,
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
A = abc. A is absorbance, a (which should be epsilon but I can't make epsilon on this board) is the
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
Partially answered below.
Read more.
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
Top answer:
To determine the equilibrium concentration of SCN- in this case, we can use the concept of Beer's
Read more.
Related Questions
The regression line from a plot of absorbance vs. concentration yields: 𝐴 = 2.31[𝐶] + 0.002. If the absorbance of an
Use the formula for the volume of a sphere to find the volume of a basketball that has a diameter of 9.2 inches. Use 3.14 as an
A student fails to fill the cuvette 2/3 full with the reaction mixture ( CV+ and OH-). What effect does this error have on the
Use the formula for the volume of a sphere to find the volume of a basketball that has a diameter of 9.2 inches. Use 3.14 as an
A restaurant produces 250 meals per day with five employees. After hiring an additional employee, the restaurant now produces
1) If your spectrophotmeter can measure n absorbance up to 1.5, what is the maximum concentration of NADH that you can measure
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
