A 0297M thiocyanate B 185 M thiocyanate D 0991 M thiocyanate

A. 0.297M thiocyanate B, 1.85 M thiocyanate D. 0.991 M thiocyanate E. none of above C. 0.149 M thiocyanate 9) The Scatchard plot for the reaction P + X PX is below, what is the equilibrium constant for the reaction? A.3.830 Mr. B. 1.478 × 10-4 Mr. C. 0.261 M-, D. 6765 M-E. 0.5832 M. disperses light into its component l 10) A wavelengths and selects a narrow band of wavelengths to pass on to the sample or detector A. polychromator B. photodiode arrmy C. monochromator D. charge couple device E. photomultiplier tube 2. Calculations: Warning! No credit will be given to answers without showing the calculation steps. 1). (20 points) Calcium is determined in a river water sample using electrothermal AAS. Four 15.0 ml aliquots are taken in 50 ml volumetric flasks, and aliquots of a 2.50 ppm (ug/ml) standard are added in the amounts of 0, 1.00, 2.00, and 3.00 ml, followed by dilution to volume. Fixed volumes of each solution are measured, giving net absorbance signals of 0.101, 0.183, 0.238, and 0.310, respectively. a) What is the concentration of calcium in the river water sample (10 points)? b) What is the coefficient of variance of the concentration of calcium (10 points)?

Solution

10. monochromator.

9. data is improper as it is not visualising . so please take the pic clearly..