Recent questions in Analytical Chemistry

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What is the composition of a given crystalline sample using X-ray diffraction analysis?

asked Jan 30 in Analytical Chemistry by ClaritaTrive (2.4k points)

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1 answer 95 views

What is the composition of a commercial sample of aspirin, and what are the concentrations of its impurities, if any, determined by liquid chromatography analysis?

asked Jan 30 in Analytical Chemistry by KristeenN708 (2.1k points)

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1 answer 114 views

What is the composition and crystal structure of a mineral sample using X-ray diffraction analysis?

asked Jan 30 in Analytical Chemistry by JudithMackni (2.3k points)

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1 answer 100 views

What is the composition and concentration of the components in a mixture of gasoline using gas chromatography?

asked Jan 30 in Analytical Chemistry by MariamPaine (1.9k points)

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1 answer 129 views

What is the composition and concentration of different gases in a gas mixture (such as air) and how can they be separated and analyzed using gas chromatography?

asked Jan 30 in Analytical Chemistry by AndrewSisley (2.1k points)

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1 answer 101 views

What is the chemical structure of the unknown compound, X, based on its NMR spectrum, which exhibits a singlet at 1.9 ppm and a quartet at 7.2 ppm, with J value of 8 Hz?

asked Jan 30 in Analytical Chemistry by LouellaKinar (2.0k points)

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1 answer 81 views

What is the chemical structure of the unknown compound X, which exhibits the NMR spectrum below: - a singlet at δ 1.2 ppm (integral = 3H)- a triplet at δ 1.4 ppm (integral = 2H)- a quartet at δ 2.0 ppm (integral = 2H)- a doublet at δ 2.5 ppm (integral = 3H)- a singlet at δ 7.3 ppm (integral = 1H)

asked Jan 30 in Analytical Chemistry by Rosaline02Y (2.0k points)

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1 answer 105 views

What is the chemical structure of compound X, based on the nuclear magnetic resonance (NMR) spectra?

asked Jan 30 in Analytical Chemistry by IolaHolly818 (2.0k points)

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1 answer 109 views

What is the chemical structure of compound X, as determined by analyzing its nuclear magnetic resonance spectrum?

asked Jan 30 in Analytical Chemistry by DorieEverson (2.0k points)

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1 answer 107 views

What is the chemical structure of an unknown compound if its proton NMR spectrum displays a triple peak at δ 1.2, a singlet peak at δ 2.0, a doublet peak at δ 3.6, and a quartet peak at δ 7.5?

asked Jan 30 in Analytical Chemistry by NamSampson2 (1.8k points)

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1 answer 134 views

What is the chemical formula of the unknown compound that has a molecular ion peak (M+) at m/z 146, and major fragment peaks at m/z 120 and 105 in the mass spectrum, and has the molecular ion peak four times more intense than the base peak? Use mass spectrometry to identify the unknown compound.

asked Jan 30 in Analytical Chemistry by JaredOliva6 (2.2k points)

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1 answer 92 views

What is the chemical formula of an unknown compound that contains 60% carbon, 13.3% hydrogen, and 26.7% oxygen by mass, determined through elemental analysis?

asked Jan 30 in Analytical Chemistry by OrenTherrien (1.8k points)

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1 answer 103 views

What is the chemical composition of a sample of unknown compound using X-ray diffraction analysis?

asked Jan 30 in Analytical Chemistry by ARIDrusilla (1.7k points)

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1 answer 117 views

What is the chemical composition of a given rock sample? Use X-ray diffraction analysis to identify the minerals present in the sample and determine their relative abundances.

asked Jan 30 in Analytical Chemistry by EarnestineFo (2.1k points)

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1 answer 123 views

What is the chemical composition of a given crystalline substance using X-ray diffraction analysis and how can it be determined from the diffraction pattern obtained?

asked Jan 30 in Analytical Chemistry by MathewForman (1.6k points)

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1 answer 111 views

What is the best electrophoresis technique to use for separating and analyzing the composition of proteins in a complex sample mixture?

asked Jan 30 in Analytical Chemistry by VictorR1855 (2.2k points)

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1 answer 113 views

What is the amount of silver ions present in a sample of a 0.500 M silver nitrate solution after the complete electrolysis of 50.0 mL using coulometric titration at a constant current of 2.00 mA for 25.0 minutes?

asked Jan 30 in Analytical Chemistry by YRPAbe659621 (2.3k points)

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1 answer 106 views

What is the amount of CuSO4 present in a given sample using coulometry if a constant current of 50 mA is passed through the sample for 30 minutes, and 30.6 mA-h of charge is consumed in the process?

asked Jan 30 in Analytical Chemistry by DanaValentin (1.5k points)

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1 answer 99 views

What is the amount of copper sulfate (CuSO4) present in a sample of 5.00 grams of a compound containing only copper sulfate? Use gravimetric analysis to determine the answer.

asked Jan 30 in Analytical Chemistry by JamaalEnnor6 (1.9k points)

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1 answer 104 views

What is the amount of copper present in a 2-g copper wire using coulometry?

asked Jan 30 in Analytical Chemistry by DanaPittmann (1.5k points)

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