Recent questions in Chemistry

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What are the resonance structures of the molecule benzene (C6H6)? Also, indicate the delocalization of electrons between carbon atoms in the molecule.

asked Jan 31 in Chemical bonding by CruzDenker57 (330 points)

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1 answer 51 views

Identify the number of resonance structures for the molecule of benzene and draw all of them.

asked Jan 31 in Chemical bonding by KatiaEthridg (390 points)

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Identify the functional group present in Benzaldehyde and explain the chemical reaction it undergoes with Tollen's reagent.

asked Jan 31 in Organic Chemistry by AmyBurk87686 (330 points)

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1 answer 65 views

What is the percent ionization of a 0.1 M solution of acetic acid (Ka = 1.8 x 10^-5) before and after the addition of 0.05 M hydrochloric acid? How does the pH of the solution change after the addition of the hydrochloric acid?

asked Jan 31 in Chemical equilibrium by BlakeBradfie (670 points)

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1 answer 55 views

What is the predicted geometry and polarity of the XeF2 molecule based on the VSEPR theory?

asked Jan 31 in Inorganic Chemistry by Kimberly61S1 (630 points)

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1 answer 54 views

What is the structure of the unknown compound X, based on its nuclear magnetic resonance spectrum, which shows a singlet at δ 7.8 ppm and a triplet at δ 1.2 ppm?

asked Jan 31 in Analytical Chemistry by RosalindaFra (510 points)

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1 answer 62 views

What is the structure of compound X, based on its nuclear magnetic resonance spectroscopy spectrum, which displays a singlet at 3.8 ppm and a quartet at 1.2 ppm?

asked Jan 31 in Analytical Chemistry by CarrieBlackm (430 points)

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1 answer 7 views

What is the chemical structure of a compound with a chemical formula of C9H10O2 that shows a signal at 2.3 ppm in its proton NMR spectrum and has a singlet signal at 170 ppm in its carbon NMR spectrum?

asked Jan 31 in Physical Chemistry by MarjorieOuth (650 points)

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1 answer 56 views

What is the chemical structure of a compound that exhibits a peak at 3 ppm in a ^1H-NMR spectrum and a peak at 125 ppm in a ^13C-NMR spectrum?

asked Jan 31 in Physical Chemistry by IrwinPie1108 (500 points)

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1 answer 54 views

What is the structure of compound X based on its proton NMR spectrum, which shows a singlet at 1.2 ppm with an integration of 3, a doublet at 2.5 ppm with an integration of 2, and a quartet at 3.7 ppm with an integration of 1?

asked Jan 31 in Analytical Chemistry by TiffinydeLar (370 points)

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1 answer 61 views

What is the structure of an unknown compound with molecular formula C5H10O2 that exhibits singlets in its 1H-NMR spectrum at δ 1.1, 2.3 and 3.7 ppm and a doublet at δ 2.9 ppm?

asked Jan 31 in Analytical Chemistry by KandiCrouse (730 points)

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1 answer 58 views

What is the chemical structure of an unknown compound based on its infrared spectrum, where a peak is observed at 3500 cm^-1 and no peaks are observed between 1600-1800 cm^-1?

asked Jan 31 in Physical Chemistry by BarbraAdamso (230 points)

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1 answer 58 views

Identify the structure of the unknown organic compound using IR and NMR spectroscopy. The IR spectrum shows a peak at 1720 cm⁻¹ and the NMR spectrum shows a singlet at δ 1.0 ppm, a quartet at δ 2.5 ppm, and a doublet at δ 7.2 ppm. Provide the molecular formula and propose a possible structure for the compound.

asked Jan 31 in Organic Chemistry by Lee78L42537 (450 points)

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1 answer 64 views

How does the DNA repair pathway known as base excision repair (BER) work on a molecular level and what are the key enzymes involved in this process?

asked Jan 31 in BioChemistry by Ofelia983738 (270 points)

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1 answer 7 views

How does the base excision repair mechanism work to maintain the integrity of DNA during replication and prevent mutations?

asked Jan 31 in BioChemistry by CornellSumme (390 points)

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1 answer 45 views

What are the steps involved in balancing a chemical equation, and can you provide an example of a balanced equation?

asked Jan 31 in Chemical education by ElliottRoble (430 points)

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1 answer 56 views

How do bacteria convert atmospheric nitrogen gas into organic nitrogen molecules like amino acids? What role do enzymes such as nitrogenase and reductase play in this process?

asked Jan 31 in BioChemistry by LatriceBurba (410 points)

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1 answer 52 views

What are the mechanisms by which bacteria develop resistance to antibiotics, and how can medicinal chemists modify existing antibiotics or develop new ones to overcome these mechanisms and effectively combat drug-resistant bacteria?

asked Jan 31 in Medicinal Chemistry by StellaJyk813 (450 points)

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1 answer 69 views

What is the mechanism of action of avobenzone, a widely used ingredient in sunscreen products, under UV radiation? Investigate the photochemical properties of the compound and highlight the factors that make it an efficient UV absorber.

asked Jan 31 in PhotoChemistry by AhmadMontero (530 points)

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1 answer 80 views

What is the role of ATP synthase in oxidative phosphorylation within the electron transport chain?

asked Jan 31 in BioChemistry by MaddisonHoag (510 points)

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