Why do we need to prepare a standard curve before we can useBeer's Law to determine the concentration of a solution?O We don't have to create a standard curve so long as we choose theappropriate wavelength.Because the standard curve tells us the absorbance of our sampleBecause the standard curve is used to determine the extinctioncoefficientBecause the standard curve indicates what wavelength to set thespectrophotometer to

Answer :In Beer's Law, standard curve is of absorbance vs concentration.based on the Beer's law…

Why do we need to prepare a standard curve before we can use Beer's Law to determine the concentration of a solution? O We don't have to create a standard curve so long as we choose the appropriate wavelength. O Because the standard curve tells us the absorbance of our sample Because the standard curve is used to determine the extinction coefficient Because the standard curve indicates what wavelength to set the spectrophotometer to

Why do we need to prepare a standard curve before we can use Beer's Law to determine the concentration of a solution? O We don't have to create a standard curve so long as we choose the appropriate wavelength. O Because the standard curve tells us the absorbance of our sample Because the standard curve is used to determine the extinction coefficient Because the standard curve indicates what wavelength to set the spectrophotometer to

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry

Section: Chapter Questions

Problem 9.15QAP

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A protein’s concentration can be determined spectrophotometrically by mixing it with an indicator called a Bradford reagent and measuring the amount of light absorbed by the protein. Use the plot below to determine the mass of protein (in micrograms, μμg ) in 100.0 mL of the solution if its absorbance is 0.398. A. 52 B. 3.1 C. 2.4 D. 0.52 E. 0.031
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08. HW Module 8 (due 10/17) * OWLV2 | Online teaching and lear X genow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take Paused [References] TUTOR Photon Energy I Some chemical reactions, such as formation of ozone in Earth's stratosphere, can be initiated by light that has a wavelength less than some particular value. Calculate the longest wavelength (nm) that can provide an energy of at least 420 kJ/mol. Submit Show Approach Hide Tutor Steps TUTOR STEP What is the frequency of light, in hertz, that has the necessary energy? E = 6.98×10-19 J/photon ZH X Recheck Next (3 of 5) 21st attempt Incorrect Use Planck's equation, E= hv or v = to determine the frequency. h= 6.626 × 10-34 J s Previous Next Submit Answer Try Another Version 5 item attempts remainin Show Hint 7:00 PM 10/17/2021 ch +66 LEGO 6. H.

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