Recent questions in Chemistry

0 votes

1 answer 63 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 GeorgiaHatfi (430 points)

0 votes

1 answer 51 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 EmmaMsq72893 (550 points)

0 votes

1 answer 71 views

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

asked Jan 30 in Analytical Chemistry by RacheleBlame (430 points)

0 votes

1 answer 74 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 NumbersJacks (870 points)

0 votes

1 answer 67 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 BrittneyN44 (350 points)

0 votes

1 answer 57 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 KraigMoore5 (630 points)

0 votes

1 answer 58 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 ChanteCamari (610 points)

0 votes

1 answer 56 views

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

asked Jan 30 in Analytical Chemistry by BennyCrain61 (510 points)

0 votes

1 answer 67 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 LottieNvb113 (230 points)

0 votes

1 answer 72 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 TyreeHayward (610 points)

0 votes

1 answer 53 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 Dusty1260020 (550 points)

0 votes

1 answer 67 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 ReaganWoolls (850 points)

0 votes

1 answer 71 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 Valentin4290 (410 points)

0 votes

1 answer 60 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 VivienScheff (510 points)

0 votes

1 answer 56 views

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

asked Jan 30 in Analytical Chemistry by TyroneSauer (330 points)

0 votes

1 answer 60 views

What is the amount of copper present in a 0.2500 g sample of a copper salt, if it requires 12500 C of electricity to completely deposit it during coulometric titration?

asked Jan 30 in Analytical Chemistry by NobleHockman (310 points)

0 votes

1 answer 33 views

What is the amount of copper ions present in a sample if 5.25 grams of the sample produces a current of 2.35 A for 2 hours during coulometry analysis? The molar mass of copper is 63.55 g/mol and the sample contains only copper ions.

asked Jan 30 in Analytical Chemistry by RegenaMannin (370 points)

0 votes

1 answer 52 views

What is the amount of copper ions present in a 1.0 mL sample of copper sulfate solution, when a current of 3.0 A for 10 seconds is used for coulometry analysis, assuming 100% efficiency in electrode reactions and a coulombic efficiency of 90%?

asked Jan 30 in Analytical Chemistry by IsaacRubbo84 (590 points)

0 votes

1 answer 45 views

What is the amount of copper ions present in a 0.01 M CuSO4 solution that is electrolyzed for 10 minutes using a current of 0.3 A?

asked Jan 30 in Analytical Chemistry by [empty] (270 points)

0 votes

1 answer 55 views

What is the amount of copper ions in a 0.1 M CuSO4 solution if it takes 10 minutes to completely electrolyze (under constant current of 0.15 A) a 35-mg copper wire which is in contact with the solution?

asked Jan 30 in Analytical Chemistry by TamiUdl83036 (650 points)

Categories