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- Maria was tasked to determine the concentration of a Fe2(SO4)3 solution. She prepared 5 different standards of Fe2(SO4)3 using the table below as her guide. She ran the standards and the unknown solution through UV-VIS spectroscopy and recorded the absorbances of each solution. What is the slope of the line of the standard curve from the given data? 0.3194 1.1385 0.3217 2.131Calculate % transmittance if 85% of light was absorbed by an analyte sample in an UV-Vis spetrophotometric experimentwhar do these ir peaks mean IR 2359.48 1697.05 1610.27
- Adenine has a molar extinction coefficient of 7020 mol dm–3 cm–1 at a wavelength of 265 nm and a characteristic NH2 bending vibration at 1650 cm–1. Show your working for each stage of this question. a) Calculate the transmission of 265 nm light through a 2.0×10–4 molar solution of adenine in a 0.5 cm wide cuvette. b) Calculate, ω, the fundamental frequency of the NH2 bend (in s–1).True of false? 1. Raman Spectroscopy can be used in the airport to detect the presence of Alcohol in the bags? 2. Furnace atomisation is used when the concentration of the sample in the ppb level? 3. 24 karat of gold mean the percent of gold in the object is 75%?Assume that the first line of the rotational spectrum (J = 0 → J = 1) of CO is 3.8424 cm-1. Calculate the length of the CO bond in picometer (10-12 m). To mark the answer, neglect the fractional part and do not write the unit. Information: mass of carbon: 12 c.u. mass of oxygen: 16 c.u. h = 6,6261 x 10-34 J.s π = 3,1416 c = 2,9979 x108 m.s-1 N = 6,0221 x 1023 mol-1