Recent activity by BeverlyNavar

1 answer 31 views

What is the relationship between the intermolecular forces present in a substance and its boiling point, and how can we predict the boiling point of a given substance based on its intermolecular forces?

answered Feb 24 in Chemical bonding

1 answer 23 views

How does the presence of a catalyst affect the rate constant of a reaction with a specific mechanism?

answered Feb 22 in Chemical kinetics

1 answer 38 views

How does the prediction of catalytic activity and selectivity using quantum chemistry methods differ for different types of catalysts and reactions, and what factors contribute to the accuracy of these predictions?

asked Feb 22 in Quantum Chemistry

1 answer 30 views

How does the molecular structure of a surfactant affect the self-assembly behavior and physical properties of its resulting supramolecular aggregates in solution?

answered Feb 21 in Physical Chemistry

1 answer 32 views

What is the effect of cooling rate on the crystallization of polyethylene and polypropylene? Can you explain the observed differences in morphology and properties for both polymers?

answered Feb 19 in Polymer Chemistry

1 answer 31 views

How does the concentration of reactants affect the reaction rate and ultimately the yield of a chemical reaction, and what is the optimal concentration range to maximize yield in the reaction between sodium thiosulfate and hydrochloric acid?

answered Feb 19 in Chemical kinetics

1 answer 41 views

How does the breakdown of amino acids differ between humans and bacteria?

asked Feb 18 in BioChemistry

1 answer 66 views

What is the bond order of the molecule NO+ and how does it differ from the bond order of the neutral molecule NO?

answered Feb 18 in Chemical bonding

1 answer 38 views

What is the balanced chemical equation for the reaction between sulfuric acid (H2SO4) and calcium hydroxide (Ca(OH)2) to form calcium sulfate (CaSO4) and water (H2O)?

answered Feb 17 in Chemical reactions

1 answer 44 views

How does the absorption of light by molecules and materials affect their molecular structure and reactivity, and how can this knowledge be utilized in developing new materials for applications such as solar panels or sensors?

answered Feb 17 in Quantum Chemistry

1 answer 36 views

What is the mechanism behind the responsiveness of polymer-based smart materials to external stimuli and how can this be utilized in the development of novel applications?

answered Feb 14 in Polymer Chemistry

1 answer 41 views

How can we optimize the production of detergents through the selection of appropriate raw materials and process variables to achieve desired product characteristics, such as surfactant activity and pH levels?

answered Feb 14 in Chemical engineering

1 answer 58 views

What is the effect of increasing temperature on the equilibrium position of a reaction that produces gas? Use Le Chatelier's principle to explain your answer.

asked Feb 13 in Chemical reactions

1 answer 73 views

What type of intermolecular forces are present in ethanol (CH3CH2OH)?

answered Feb 13 in Chemical bonding

1 answer 68 views

How can the properties of liquid crystals be optimized to improve the quality and efficiency of display technology?

asked Feb 10 in Materials Chemistry

1 answer 30 views

How can the development of a chemical process for the production of biodegradable detergents be optimized for maximum efficiency and minimal environmental impact?

asked Feb 7 in Chemical engineering

1 answer 37 views

How can fertilizer management practices be improved to minimize environmental pollution while increasing crop production in sustainable agriculture?

asked Feb 5 in Environmental Chemistry

1 answer 79 views

Find the standard enthalpy change for the formation reaction of methane gas (CH4) from its elements in their standard states, given the following standard enthalpy of formation values: ΔHf°[CH4] = -74.81 kJ/mol ΔHf°[H2] = 0 kJ/mol ΔHf°[C(graphite)] = 0 kJ/mol

asked Feb 4 in Chemical thermodynamics

1 answer 70 views

Determine the rate law for the reaction of nitrogen dioxide with hydrogen gas, if the reaction rate is directly proportional to the concentration of nitrogen dioxide and the square of the concentration of hydrogen gas. Express the rate law in terms of the rate constant and the concentrations of the reactants.

asked Feb 4 in Chemical kinetics

1 answer 84 views

Calculate the standard enthalpy change (ΔH°) for the reaction:2H2(g) + O2(g) → 2H2O(g)given the following bond energies:H-H = 436 kJ/mol, O=O = 498 kJ/mol, H-O = 463 kJ/mol

asked Feb 3 in Quantum Chemistry

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