Answered: In a GC experiment, a 30.00 m long…

In a GC experiment, a 30.00 m long fused silica capillary column produced 150,000 theoretical plates. The plate height had this value: O 0.20 mm O 0.25 mm 0.32 mm O None of the above

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...

See similar textbooks

Similar questions

Use the Debye-Hückel equation to calculate the activity Ion Ion size (a, pm) coefficient (y) for each of the ions at the given ionic strength ( H) at 25 °C. Refer to the table for the ion size (a). Ca2+, Sn2+ 600 Ba?+ 500 OH- when u = 0.173 M so; OH-, SCN- 400 350 CN- 300 Rb+ 250 Y = so?- when u = 0.313 M Y = stv hulu 18 G Se otvoe URL & 5 6 8. 9 U 02
My Home * OWLV2 | Online teaching and lea x a cvg.cengagenów.com/ilm/takeAssignment/takeCXPCompliantActivity.do?locator=assignment-take Sa 9- CHEMICAL QUANTITIES Study Pr O Previous Page 8 of 16 Next O Subni Silicon carbide, SiC, is one of the hardest materials known. Surpassed in hardness only by diamond, it is sometimes known commercially as carborundum. Silicon carbide is used primarily as an abrasive for sandpaper and is manufactured by heating common sand (silicon dioxide, SiO2) with carbon in a furnace. SiO2 (s) + C(s) + CO(g) + SiC(s) What mass of silicon carbide should result when 4.3 kg of pure sand is heated with an excess of carbon? Mass = kg Save and Er Cengage Learning | Cengage Technical Support https://als-anp.cengage.info/als-asp/take P Type here to search 1243 PM 4/24/2021
(d) The л/A behaviour for stearic acid (solid line) and oleic acid (dotted line) are shown below. Account clearly for the difference in behaviour for the two surface active materials. 60 50 40 Surface pressure 30 (mN/m) 20 10 0 0.1 0.2 0.3 0.4 area per molecule (nm²) 0.5 0.6 [7 marks]
Can calcium and barium be separated by precipitation with sulfate? (Ksp CaSO4 2.4x10¯⁵, Ksp BaSO4 1.1x10¯¹ᴼ) Show calcukations.
A sample of steel (0.1005 g) was dissolved in acid and the solution made up to 100 cm³ with demineralised water. From this solution, 10.0 cm³ aliquots, to which were added 0.0, 10.0, 20.0, 30.0, and 40.0 cm³ of a 2.50 mg L-1 Cr solution and the flasks made up to 100.0 cm³ with distilled water. Use the absorbance values obtained below for these solutions to determine the chromium content of the sample of steel, expressing the result as a weight percentage (% w/w). 3 Sample solution (10.0 cm³) + 0.0 cm³ standard Sample solution (10.0 cm³) + 10.0 cm³ standard Sample solution (10.0 cm³) + 20.0 cm³ standard Sample solution (10.0 cm³) + 30.0 cm³ standard Sample solution (10.0 cm³) + 40.0 cm³ standard Absorbance 0.201 0.292 0.378 0.467 0.554
A specimen of nickel (a=3.53 Å) powder is studied by X-ray diffractometry. Thesample is irradiated with Cr Ka radiation, which has a wavelength of 2.29 Å.Only three diffraction peaks are observed: (111), (200) and (220). Explain (Why those three? Why not more than those three?).