With the help of spectral data given, calculate the mass of Neon and encircle the best option. (Percentage of 10Ne20, 10Ne21 and 10Ne22 are 90.92%, 0.26% and 8.82% respectively).
Correct answer: C. 20.18 amu
- A. 22.18 amu
- B. 21.18 amu
- C. 20.18 amu
- D. 22.20 amu
Explanation
relative atomic mass = (20 × 90.92 + 21 × 0.26 + 22 × 8.82) ÷ 100 = 20.179 ≈ 20.18
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Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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