How many milliliters of 100 % (w/v) ethanol are equal to 0.57 millimoles (mmole)?  (Hint:  It is not 57 ml.)

Q: Calculate the specific absorbance ratio (SAR), where A620 = 0.166 and A280 = 0.557

A: The specific absorbance ratio (SAR) is calculated as the ratio of the absorbance at 620 nm to the…

Q: You are given the following solutions, will have the lowest %T and A will have the lowest…

A: Given A set of solutions with 5 different color intensity

Q: 6. A solution containing 5.75 mg/100 mL of X (335 g/mol) has a transmittance of 41.6% in a 2.0 cm…

A:

Q: 3. A 2.50×104M solution of a dye has an absorbance of 0.680 when measured in a 1.00 cm cell at 625…

A: The relation between absorbance and transmittance is given by A=2-logT     or A=-logT where A=…

Q: Calculate the transmittance (in %) of an unknown concentration of a protein that was standardized…

A: we are required to find the transmittance % of unknown protein

Q: How did you decide on the wavelength at which you will read the absorbance of the diluted solutions?…

A: Absorbance of a species can be determined by using Lambert-Beer's law. According to this law…

Q: A solution containing 5.75 mg/100 mL of X (335 g/mol) has a transmittance of 41.6% in a 2.0 cm cell…

A: Given,  A solution containing 5.75 mg/100 mL of X (335 g/mol) has a transmittance of 41.6% in a 2.0…

Q: a student in the previous question measured the absorbance of green light from a beverage that…

A: The calibration curve of Absorbance vs. Red#40 concentration (mM) results a straight line with…

Q: Absorbance 0.350 0.300 0.250 0.200 0.150 0.100 0.050 Chart Title +Series 1

A: Given :- % transmittance reading of dye = 61.6% Concentration of dye = ?

Q: Plot a calibration graph of absorbance vs concentration of Ca2+ and determine the concentration of…

A: From Beer's Law,                                A = ∈ × c × l  Where, A : Absorbance∈ : Molar…

Q: A solution containing 6.94 x 108 M CrQ3 (Q = 8-hydroxyquinolate ion) has a percent transmittance of…

A: The given problem can be solved by using the formula given below as; A=εCl =-log T…

Q: Why should absorbance be less than 2?  Please explain in terms of light transmittance

A: Absorbance A also called the optical density , is the quantity of light absorbed by a solution.

Q: Absorbance at Amax

A: The light absorbed by a solution is known as the absorbance. It is denoted by 'A'. The quantity of…

Q: Choose all correct answers for the following. Percent Transmittance is defined as:   Question 6…

A: Transmittance is defined as the amount of light that is transmitted after passing through the…

Q: A 1.2cm diameter glass cuvette is filled with a Cu(NH3)42+ solution that is deep blue. The cuvette…

A: At 620 nm, Transmittance (T) = 23% = 23/100 = 0.23 So Absorbance (A) at 620 nm = - log T…

Q: The “SPF number” of a sunscreen increases as the sunscreen absorbs more light and, therefore,…

A: For SPF 2,  Transmittance(T) = 12=0.5 Absorbance(A) = log1T=log 2=0.301 Fraction of UV-B radiation…

Q: What is the absorbance, A, of a 0.0170 M solution with a percent transmittance of 46.0%? A = Suppose…

A: Relation between absorbance and percent transmittance ---> A = log(%T) Where A= absorbance…

Q: specific absorbance ratio

A: A1=€1cl and A2=€2cl    A1/A2=€1/€2

Q: Data Set Exp.5 Use the following data to determine the mass percent of the active ingredient in…

A: Calibration curve It is the standard curve used to determine the concentration of unknown sample…

Q: Calculate the specific absorbance ratio (SAR), where A620 = 0.285 and A280 = 0.795. Enter your…

A: Specific Absorbance Ratio can be defined as Ratio of A280 to the A620 according the problem Asked…

Q: Complete the table below for the solutions of Cu2+ that you made and the given percent…

A: To convert a value from absorbance to percent transmittance, we use the following equation: %T =…

Q: 1.4 A 6.25 x 10-³ M solution of potassium permanganate (KMnO4) has a transmittance of 47.4% when…

A:

Q: 3. Fill in the following for the correspondence between % transmittance and absorbance: l0.0 %T…

A:

Q: Spectrophotomeric Data: (for standard Beer's Law graph) These are Calculated Values mL primary mL…

A: A table of spectroscopic data

Q: Indicate the relationship that exists between the transmittance expressed as a percentage, T(%), and…

A: Transmittance is expressed as percentage.Therefore,

Q: From the following options what's the reason why we use absorption and not percent transmittance for…

A: We use absorption and not percent transmittance for UV-Vis spectrophotometry because The absorption…

Q: In the equation, A = ebc, what quantity is represented by e? Molar Absorbtivity. Transmittance.…

A: We are given the equation, A = ebc and we need to discuss what is represented by e in above…

Q: 5. Determine the percent transmittance of B-carotene, C40H56 that has an absorbance of 0.5 when…

A: Note: According to our guidelines we are supposed to answer only one question.  Kindly repost other…

Q: A 50 mL aliquot of river water is treated with a conditioning solution, which is stirred and…

A: Given: Molar mass of sulphate = 96 g/mol The standard concentration of sample= 3.0×10-5 mol/L %…

Q: Suppose a student is preparing a set of standard solutions for use in a spectrophotometric study. If…

A:

Q: What absorbance corresponds to 1% transmittance? To 50% transmittance?

A: Given information,       1% transmittance and 50% transmittance

Q: A solution containing 3.75mg/100 ml of analyte (X) 220 g/mol has a transmittance of 39.6% in a 1.00…

A: It is an application of Lambert Beer law  Here we are required to find the molar absorptivity and…

Q: What is the absorbance of a solution if it had 79.5% transmittance?

A:

Q: A solution prepared by dissolving 25.8 mg of benzene (78.11 g/mol) in hexane (86.16 g/mol) and…

A: Given that  A solution prepared by dissolving 25.8 mg of benzene (78.11 g/mol) in hexane (86.16…

Q: A solution prepared by dissolving 25.8 mg of benzene (78.11 g/mol) in hexane (86.16 g/mol) and…

A:

Q: 10. The concentration of haemoglobin in a blood sample was determined by spectrophotometry. A…

A: Given Absorbance concentration 0.069 1 0.113 2 0.201 4 0.377 8 0.730 16

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.