Recent activity by MerissaGxv8

1 answer 30 views

How does the presence of a catalyst affect the rate of a specific heterogeneous catalyzed reaction? Provide experimental evidence to support your answer.

asked Feb 22 in Surface Chemistry

1 answer 38 views

How does the polarity of the solvent affect the rate of the photochemical reaction for a specific light-sensitive compound?

asked Feb 22 in PhotoChemistry

1 answer 29 views

What is the mechanism of a nucleophilic substitution reaction between 1-bromobutane and sodium hydroxide in ethanol solvent? Provide the balanced chemical equation and draw the reaction mechanism, indicating the intermediates and the transition state.

answered Feb 21 in Organic Chemistry

1 answer 34 views

How does the molecular structure of photovoltaic materials affect their photochemical properties and efficiency in converting light energy into electrical energy?

asked Feb 21 in PhotoChemistry

1 answer 33 views

How does the body synthesize essential and non-essential amino acids, and what are the biochemical pathways involved in their metabolism?

answered Feb 20 in BioChemistry

1 answer 37 views

How does the composition of the lipid bilayer affect the surface charge density of a biomembrane?

asked Feb 18 in Surface Chemistry

1 answer 37 views

What is the balanced chemical equation for the combustion of methane gas (CH4) in the presence of oxygen gas (O2)?

answered Feb 17 in Chemical reactions

1 answer 26 views

What is the activation energy of the reaction between hydrogen gas and iodine gas to form hydrogen iodide, given that the rate constant at 25°C is 1.52 × 10^-3 L^2mol^-2s^-1 and the activation energy of the reaction is 186.3 kJ/mol?

answered Feb 17 in Chemical reactions

1 answer 36 views

What are the mechanical and thermal properties of polymer nanocomposites filled with Carbon Nanotubes and how do they differ from traditional polymer composites filled with micro fillers?

answered Feb 14 in Polymer Chemistry

1 answer 67 views

What is the oxidation state of carbon in ethanol before and after it undergoes oxidation to form acetic acid?

answered Feb 13 in Organic Chemistry

1 answer 32 views

How can the performance of polymer-based membranes for water treatment be improved by manipulating their chemical structure and properties?

answered Feb 10 in Polymer Chemistry

1 answer 36 views

How can the efficiency of the photochemical degradation of pollutants be improved for industrial applications in water treatment facilities? What factors could potentially affect the photolysis rate of pollutants such as dyes, pharmaceuticals, and pesticides in the water?

asked Feb 7 in PhotoChemistry

1 answer 37 views

How can the adhesive properties of a polymer be optimized for a specific application, such as bonding two different materials with varying surface energies?

answered Feb 6 in Polymer Chemistry

1 answer 35 views

How can computational studies be used to predict and analyze the self-assembly behavior of supramolecular structures and their properties, such as stability and reactivity?

asked Feb 5 in Computational Chemistry

1 answer 54 views

How can chemistry students be better prepared for chemistry-related careers to effectively apply their education and skills to real-world situations?

asked Feb 4 in Chemical education

1 answer 36 views

How can chemistry educators provide better support for students with learning disabilities to ensure their success in the subject?

asked Feb 4 in Chemical education

1 answer 93 views

Calculate the standard enthalpy of formation of potassium nitrate (KNO3) given the following information:- Heat of combustion of potassium is -468 kJ/mol- Heat of combustion of nitrogen is -940 kJ/mol- Heat of combustion of oxygen is -283.8 kJ/mol- Heat of formation of KNO3 is -383 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 75 views

Calculate the standard enthalpy change for the phase transition reaction of solid water (ice) at -10°C into liquid water at 25°C if the enthalpy of fusion of ice is 6.01 kJ/mol and the specific heat capacity of ice and liquid water are 2.09 J/g°C and 4.18 J/g°C, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 65 views

Calculate the standard enthalpy change for the following reaction at 298 K using the standard enthalpies of formation:2SO2(g) + O2(g) → 2SO3(g)

answered Feb 3 in Chemical thermodynamics

1 answer 67 views

Calculate the standard electrode potential for the redox reaction between the half cells Ag/Ag+ and Cu2+/Cu at 25°C, given that the standard electrode potentials for the half cells are +0.80 V and +0.34 V respectively.

asked Feb 3 in Chemical thermodynamics

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