Recent activity by AdelineBurro

1 answer 78 views

What is the relationship between temperature and the rate of photochemical reactions, and how does this vary for different types of photochemical reactions?

asked Feb 24 in PhotoChemistry

1 answer 81 views

What is the most effective method for synthesizing and characterizing graphene oxide-silver nanocomposites that can be used for removing pharmaceutical contaminants from water?

asked Feb 21 in Materials Chemistry

1 answer 71 views

What is the maximum adsorption capacity of a solid surface for a specific gas at a constant temperature and pressure, given that the Langmuir adsorption isotherm equation is known?

asked Feb 20 in Surface Chemistry

1 answer 80 views

How does the coordination chemistry of metalloenzymes and metalloproteins affect their catalytic activity and specificity?

asked Feb 19 in Coordination Chemistry

1 answer 78 views

What is the bond enthalpy of O-H bond in the molecule H2O? Show the calculation involved in determining the enthalpy change required to break one mole of O-H bonds in water.

asked Feb 18 in Chemical bonding

1 answer 85 views

How does the binding affinity of a drug to its target receptor affect its pharmacological effects in the body?

answered Feb 17 in Medicinal Chemistry

1 answer 85 views

How does the application of computational methods in quantum chemistry help in predicting the catalytic activity and selectivity of transition metal complexes used in organic synthesis?

answered Feb 17 in Quantum Chemistry

1 answer 109 views

How can the chemical engineering principles be utilized in developing an efficient and sustainable process for the production of fragrances that are safe for human use and have a longer shelf life?

asked Feb 6 in Chemical engineering

1 answer 160 views

Calculate the standard enthalpy change ($\Delta H^\circ$) for the dissolution of 10.0 g of sodium hydroxide (NaOH) in 100.0 mL of water assuming that the specific heat capacity of the solution is 4.18 J g$^{-1}$ K$^{-1}$ and that the initial and final temperatures are 25.0$^\circ$C and 35.0$^\circ$C, respectively. The molar mass of NaOH is 40.0 g mol$^{-1}$.

answered Feb 3 in Chemical thermodynamics

1 answer 170 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?

answered Jan 31 in Physical Chemistry

1 answer 66 views

How can polarography be used to accurately determine the concentration of a metal ion in a given sample and what are the factors that may affect the accuracy of the analysis?

asked Jan 29 in Analytical Chemistry

1 answer 79 views

Calculate the change in enthalpy (ΔH) for the combustion of 10 grams of propane (C3H8) if the heat released by the reaction is -2202 kJ.

asked Jan 23 in Chemical reactions

1 answer 88 views

Calculate the bond dissociation energy of the O-H bond in a water molecule (H2O) given the enthalpy change for the reaction:H2O (g) → H2 (g) + 1/2 O2 (g)ΔH = +483.6 kJ/mol(Note: the bond dissociation energy represents the energy required to break a bond into its constituent atoms.)

asked Jan 23 in ThermoChemistry

1 answer 132 views

A student is given a sample of an inorganic compound that contains only carbon and hydrogen. The sample has a mass of 0.500 g and, upon combustion, produces 1.442 g of carbon dioxide and 0.589 g of water. Determine the empirical formula of the compound.

answered Jan 22 in Inorganic Chemistry

1 answer 139 views

A chemistry student needs to find the rate of a chemical reaction for a given set of concentrations and time, given the following reaction: 2H2 (g) + O2 (g) -> 2H2O (g)If the initial concentrations of H2 and O2 are 0.5 M and 0.2 M, and the reaction rate is 0.12 M/s, what is the concentration of H2O after 10 seconds?

asked Jan 22 in Chemical reactions

1 answer 72 views

What is the false confession phenomenon?

asked Jan 20 in Psychology

1 answer 133 views

How does the contact hypothesis aim to improve intergroup relations?

answered Jan 20 in Psychology

1 answer 56 views

According to the cognitive approach to memory, what are the processes involved in encoding, storing, and retrieving information?

asked Jan 20 in Psychology

1 answer 124 views

Who conducted the famous 'prisoner's dilemma' game?

answered Jan 20 in Psychology

1 answer 100 views

According to the cognitive-behavioral theory, why do individuals develop depression?

asked Jan 17 in Psychology

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