Q12 and Q13 and Q 14 pleeeeeeeeeease 6. A chromatographic solvent is used in the column as:a) stationary phased) adsorbent phase7. Sample portions of a material of the same size analyzed at the sametime and in the same way are calleda) Representativeb) Replicate c) Laboratoryd) Matrix8. The correct wavelength range for infrared light is:a) 180-380 cmc) 780-2500 nmb) mobile phase c) indicator9. To prepare a 50 ml portion of 0.002M Na+ solution from a 0.01M whatvolume we need to take from the concentrated solution?a) 1.0 x 10¹b) 2.5 x 10c) 0.95 x 10¹d) 1.0 x 10²10. A 50.0 ml aliquot of 0.050 M NaCN is titrated with 0.10 M HCI. Thereaction is CN + H₂O == HCN + H₂OK₂ = 6.2 x 10¹0Calculate the pH after the addition of 26.00 ml HCI.b) 10.95a) Solid, liquidb) Liquid liquidc) Liquid, gasd) Solid, gasb) 380-780 nmd) 650-4000 cma) 5.34c) 9.3811. The suitable source for Vis/near IR molecular absorption is:a) Globar b) Tungsten lamp c) Xenon lamp d) Halogen lamp12. In Column chromatography, the stationary phase is made ofand the mobile phase is made ofa) Solid, liquidb) Liquid, liquidc) Liquid, gasd) Solid, gas13. In Gas chromatography, the stationary phase is made ofand the mobile phase is made ofd) 2.8814. The main components of the optical spectroscopy when configured as:3)sample 1)source, 2)wavelength selector, 4)detector, 5)readout is forone of the following types:a) absorption b) fluorescence c) emission d) none of these

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12. In Column chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 13. In Gas chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 14. The me

12. In Column chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 13. In Gas chromatography, the stationary phase is made of and the mobile phase is made of a) Solid, liquid b) Liquid, liquid c) Liquid, gas d) Solid, gas 14. The me

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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