Recent activity by MarciaBrooke

1 answer 40 views

How does the rate of a photochemical reaction involving a certain reactant change as the intensity of light is increased or decreased?

asked Feb 22 in PhotoChemistry

1 answer 35 views

What is the most effective chemical treatment method for removing arsenic from contaminated soil in order to restore the site to a safe and healthy state?

asked Feb 21 in Environmental Chemistry

1 answer 26 views

How does the incorporation of nanoparticles into polymer-based coatings affect their properties and performance in terms of adhesion, corrosion resistance, and durability?

answered Feb 20 in Polymer Chemistry

1 answer 29 views

How does the coordinated metal ion affect the electronic properties and optical properties of metalloporphyrins and metallophthalocyanines, and what are the implications for their potential applications in catalysis, sensing or molecular electronics?

asked Feb 19 in Coordination Chemistry

1 answer 49 views

How does the concentration of heavy metals in water affect the growth and survival of fish in aquatic ecosystems, and what are some methods of remediation that can be used to mitigate the negative impacts of water pollution on aquatic life?

answered Feb 19 in Environmental Chemistry

1 answer 33 views

How does the angle of collision between reactant molecules affect the reaction rate in the reaction between iodine and propanone?

answered Feb 17 in Chemical kinetics

1 answer 30 views

What is the effect of surface functional groups (such as -COOH, -NH2, -OH, etc.) on the adhesion strength of a coating to a substrate, and how can this knowledge be used to develop more efficient adhesive and coating materials?

answered Feb 14 in Surface Chemistry

1 answer 58 views

What will happen to the equilibrium position of a chemical reaction if the concentration of one of the reactants is increased or decreased? Use Le Chatelier's principle to predict the direction of the reaction shift and explain your reasoning.

asked Feb 13 in Chemical reactions

1 answer 61 views

What chemical pollutants are present in landfill leachate and how do they impact the quality of groundwater in the surrounding area?

asked Feb 13 in Environmental Chemistry

1 answer 62 views

What is the effect of increasing the pH on the equilibrium position of the following acid-base reaction: CH3COOH (aq) + H2O (l) ⇌ CH3COO- (aq) + H3O+ (aq) How does the equilibrium shift and what is the new equilibrium constant at a given pH?

asked Feb 13 in Chemical equilibrium

1 answer 81 views

What is the crystal field splitting diagram for an octahedral coordination complex with four chlorine ligands and two water ligands? How does the crystal field theory explain the observed spectroscopic and magnetic properties of this complex?

answered Feb 13 in Coordination Chemistry

1 answer 80 views

What is the rate constant for the reaction: A + B → C if the concentration of A is 0.1 M, B is 0.2 M, and the initial rate of formation of C is 2.5 x 10^-3 M/s? (Assume the reaction follows first-order kinetics with respect to both A and B.)

asked Feb 13 in Chemical kinetics

1 answer 57 views

What is the amount of heat released when 5 grams of NaCl is crystallized from its aqueous solution at 25°C, and the final temperature of the solution is -5°C? (Given: Heat of crystallization of NaCl = -3.92 kJ/mol)

asked Feb 13 in ThermoChemistry

1 answer 24 views

How can we design new drugs for cancer treatment with a higher specificity towards cancer cells and lower toxicity towards healthy cells?

answered Feb 12 in Medicinal Chemistry

1 answer 52 views

How can the process for the production of urea-based fertilizers be optimized for increased efficiency while minimizing environmental impact?

asked Feb 10 in Chemical engineering

1 answer 31 views

How can the efficiency of the system for the production of hydrogen fuel be optimized, while minimizing energy consumption and cost?

asked Feb 7 in Chemical engineering

1 answer 110 views

Given the molecular formula of a diatomic molecule (A2), how can we use calculation of molecular orbitals to determine the bond order and predict the bond length?

asked Feb 4 in Quantum Chemistry

1 answer 86 views

How effective are the current environmental regulations in protecting the environment from chemical pollutants, and how can they be improved to better prevent environmental damage?

answered Jan 31 in Environmental Chemistry

1 answer 86 views

Calculate the concentration of Cl^- ions in a solution if the electrode potential of a Pt/AgCl electrode in the solution is measured to be +0.222 V versus the standard hydrogen electrode (SHE) at 25°C. The standard electrode potential for the reaction AgCl(s) + e^- → Ag(s) + Cl^- is +0.222 V versus SHE at 25°C. Assume the activity coefficient of Cl^- ions in the solution is equal to 1.

asked Jan 23 in ElectroChemistry

1 answer 117 views

A 50.0 g sample of ethanol is heated from 25.0 °C to 85.0 °C, and absorbs 237 J of heat. What is the specific heat capacity of ethanol?

answered Jan 22 in ThermoChemistry

Recent activity by MarciaBrooke

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