Questions by JanF74978399

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1 answer 25 views

What is the overall mechanism responsible for the transport of lipids in the bloodstream, and how does this mechanism allow for efficient lipid metabolism in the body?

asked 3 days ago in BioChemistry

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1 answer 19 views

How does the excitation of lanthanide complexes affect their luminescence properties? Can this be used for any practical applications, such as sensing or imaging?

asked 5 days ago in PhotoChemistry

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1 answer 25 views

How does the addition of detergents affect the surface tension of water and why?

asked Feb 17 in Surface Chemistry

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1 answer 34 views

What is the difference between primary, secondary, and tertiary amines, and how do their physical and chemical properties differ? Also, explain the various methods of preparation for amines and amides with suitable examples.

asked Feb 14 in Organic Chemistry

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1 answer 38 views

How can we predict the shape and properties of a new drug molecule, and determine how it will interact with its target protein, using computational chemistry and molecular modeling techniques?

asked Feb 14 in Physical Chemistry

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1 answer 9 views

How can we use molecular modeling techniques to optimize the design of drug molecules that will bind with high affinity to a specific protein receptor?

asked Feb 13 in Physical Chemistry

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1 answer 28 views

How can we use molecular docking studies to predict the binding affinity between two proteins involved in a disease pathway, and identify potential small molecule inhibitors to disrupt their interaction and potentially treat the disease?

asked Feb 13 in Computational Chemistry

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1 answer 37 views

What is the effect of increasing the concentration of reactants on the rate of reaction between potassium iodide and lead nitrate in an aqueous solution?

asked Feb 13 in Chemical kinetics

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1 answer 38 views

How do different greenhouse gases (carbon dioxide, methane, nitrous oxide, etc.) contribute to global warming and what is the relative importance of each gas?

asked Feb 13 in Environmental Chemistry

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1 answer 36 views

What is the mechanism by which Chlorofluorocarbons (CFCs) contribute to the depletion of the ozone layer, and how does this impact the prevalence of skin cancer and other harmful effects on human health and the environment?

asked Feb 12 in Environmental Chemistry

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1 answer 46 views

How can the properties of polymer-based smart materials be optimized for specific applications?

asked Feb 10 in Polymer Chemistry

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1 answer 28 views

How can technology be effectively integrated into chemistry education to help students better understand complex concepts, without becoming a distraction or hindrance to their learning process?

asked Feb 6 in Chemical education

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1 answer 44 views

How can computational tools be used in molecular docking studies to identify potential drug molecules that can target specific proteins involved in disease pathways?

asked Feb 5 in Computational Chemistry

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1 answer 41 views

Calculate the standard free energy change (ΔG°) for the following redox reaction at 298 K, given that E°cell = 0.91 V:Zn(s) + 2 Ag+(aq) → Zn2+(aq) + 2 Ag(s)

asked Feb 3 in Chemical thermodynamics

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1 answer 51 views

Calculate the standard enthalpy change for the reaction between hydrochloric acid (HCl) and ammonia (NH3) to produce ammonium chloride (NH4Cl) if the reaction is carried out in a solution of water (H2O), given the following information:HCl(aq) + H2O(l) -> H3O+(aq) + Cl-(aq) ΔH1 = -74.8 kJ/mol NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq) ΔH2 = -51.8 kJ/mol NH4Cl(s) → NH4+(aq) + Cl-(aq) ΔH3 = 15.2 kJ/mol Ensure that the answer is in kJ/mol.

asked Feb 3 in Chemical thermodynamics

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1 answer 59 views

Calculate the standard enthalpy change (ΔH°) for the reaction where 50.0 mL of 2.0 M hydrochloric acid reacts with 50.0 mL of 2.0 M sodium hydroxide to form 50.0 mL of 2.0 M sodium chloride and water, given that the density of the solutions is 1.00 g/mL and the specific heat capacity of the solutions is 4.18 J/g·°C.

asked Feb 3 in Chemical thermodynamics

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1 answer 63 views

Calculate the reaction quotient, Q, for the following reaction at room temperature:$$\ce{CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g)}$$Given:- Partial pressure of methane, $\ce{CH4}$ = 0.25 atm- Partial pressure of oxygen, $\ce{O2}$ = 0.75 atm- Partial pressure of carbon dioxide, $\ce{CO2}$ = 0.0 atm- Partial pressure of water vapor, $\ce{H2O(g)}$ = 0.0 atmUse Q to determine if the reaction is at equilibrium, or if it will shift towards the products or reactants to reach equilibrium.

asked Feb 3 in Chemical thermodynamics

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1 answer 33 views

Calculate the pH of a buffer solution that contains 0.2 moles of acetic acid (CH3COOH) and 0.1 moles of sodium acetate (NaCH3COO) dissolved in one liter of solution. The dissociation constant of acetic acid is 1.8 x 10^-5.

asked Feb 3 in Chemical reactions

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1 answer 48 views

How does changing the stoichiometry of reactants in a chemical reaction affect the rate of reaction, and how can we experimentally investigate this relationship?

asked Feb 3 in Chemical kinetics

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1 answer 39 views

What is the effect of changing the concentration of reactants on the reaction rate and profitability of the following reaction: A + B → C?

asked Feb 3 in Chemical kinetics

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