Discuss the physical interfaces that may cause reflection and / or refraction of the waves that occur between a blast site and a structure of concern.( Please step by step answer and don't use ASI Answer )

White light is directed to a reflection grating at an incident angle of 45 degrees. How many grooves per mm should the grating have to diffract first order 666 nm light at an angle of -10 degrees. Round your answer to the nearest 1 groove/mm.

Draw a calibration curve using the data set given below. Show and explain LOD and LOQ. Determine the dynamic linear range by examining the linearity of the absorbance measurements against Metal atoms concentration. Also Explain calibration methods. (hint: there are there types of methods. These are internal, external and standard addition methods) Metal, ppm Absorbance 0.220 0.044 0.440 0.090 1.100 0.228 2.200 0.465 4.400 0.932 6.600 1.187

As pH changes, ho will absorbance change t the wavelength of the isosbestic point?

Chemistry Select the choice with words that best fills in the blanks in the following statement. The greatest absorbance occurs when the solution and beam color are the because the solution color appearance is the color being. by the solution Choose...

Given the following size frequency for a dust: Size Interval (um) 7-17.5 17.5-21 21-25 25-28 28-30 30-33 33-36 36-41 41-49 49-70 % by Number 10 10 10 10 10 10 10 10 10 10 a. Plot the cumulative frequency distributions (in %) of the number, surface area, and mass on linear graph paper assuming all particles are spheres with Pp 1.6 g cm ³. = b. Is this a log-normally distributed dust?

1) Calculate the molar extinction coefficient (molar absorptivity) of tartrazine in units of 1/(M·cm). Assume a cuvette path length of 1.00 cm. 2) If Ana determines the absorbance of an unknown tartrazine sample to be 0.662, what is the concentration of the sample in µM?

Please provide Given, Required, and complete Solution. Thank you very much!

© Macmillan Learning The spectroscopic data in the table is generated with five solutions of known concentration. Concentration (M) 0.0163 m = 0.0326 0.0652 0.130 0.261 Absorbance 0.1233 0.2143 0.5231 0.8887 2.008 Use a spreadsheet program, such as Microsoft Excel, to graph the data points and determine the equation of the best-fit line. What is the slope of the linear regression line formed by these points? M-1

Application Questions: Answer the following questions. Show all work for calculations and include units and the correct number of significant figures. 1. A solution of cobalt (III) chloride was analyzed using a UV/Vis spectrometer and produced the spectra shown in Fig. 4. What is the best wavelength to use for analyzing the samples? Best wavelength to analyze sample: Absorbance 0.600 0.500 0.400 0.300 0.200 0.100 0.000 375 400 450 425 475 500 525 550 Wavelength (nm) Molarity of FD&C #2 0.000 0.115 0.225 0.350 575 Figure 4. UV/Vis spectra of a cobalt (III) chloride solution for determination of the best wavelength for analysis. 8 600 625 2. Create a graph in Excel and add a linear trendline using the data given below. Calculate the molarity of a solution (to 3 significant digits) with an absorbance of 0.576 using the trendline equation from this graph. Show your work in the box below. DO NOT ATTACH THE FIGURE. Abs 0.002 0.187 0.442 0.699 650 675