Recent activity by Dawn49061396

1 answer 34 views

How does the pH of acid rain affect the growth and survival of aquatic organisms in streams and lakes, and what can be done to mitigate these effects?

asked Feb 22 in Environmental Chemistry

1 answer 26 views

How does pH level affect the solubility of metal ions in acid mine drainage and what is the potential impact on water quality?

asked Feb 22 in Environmental Chemistry

1 answer 28 views

How does the molecular structure and properties of a ligand affect the binding affinity to a specific protein target, as determined by molecular dynamics simulations?

answered Feb 21 in Computational Chemistry

1 answer 26 views

What is the heat of hydration for magnesium sulfate when dissolved in water, assuming a mass of 10 grams of magnesium sulfate is dissolved in 100 mL of water?

answered Feb 20 in ThermoChemistry

1 answer 23 views

How do the electronic and magnetic properties of transition metal complexes vary as a function of the metal's atomic number and the ligands attached to it?

answered Feb 20 in Quantum Chemistry

1 answer 29 views

What is the effect of surface area on the rate of reaction between marble chips and hydrochloric acid?

asked Feb 19 in Chemical kinetics

1 answer 37 views

What is the bond enthalpy of the carbon-hydrogen bond in methane (CH4) at a room temperature of 25°C?

answered Feb 18 in Chemical bonding

1 answer 41 views

How does surface modification affect the stability and reactivity of metal nanoparticles in different chemical environments?

answered Feb 17 in Surface Chemistry

1 answer 54 views

What is the oxidation state of uranium in the coordination complex [UO2(NO3)2(H2O)2] and how many oxygen atoms are involved in the coordination around uranium in this complex?

asked Feb 13 in Coordination Chemistry

1 answer 31 views

What specific materials and factors need to be considered in designing a system for the production of hydrogen fuel to ensure maximum efficiency and sustainability?

answered Feb 12 in Chemical engineering

1 answer 59 views

How can we design a new drug that selectively targets the underlying cause of psoriasis, a chronic autoimmune skin disease that affects millions of people worldwide, while minimizing potential side effects on other organs and tissues?

asked Feb 12 in Medicinal Chemistry

1 answer 36 views

What specific chemical properties should be considered for designing a drug to treat Type 2 Diabetes Mellitus?

asked Feb 12 in Medicinal Chemistry

1 answer 31 views

What is the current density in an electrochemical cell where a current of 5 amperes is passed through a copper electrode with a surface area of 0.1 square meters for 10 minutes? The half-cell reaction is: Cu2+ + 2 e- -> Cu.

asked Feb 12 in ElectroChemistry

1 answer 55 views

How can the synthesis of polyvinylpyrrolidone (PVP) from vinylpyrrolidone monomer (VP) be optimized to achieve the desired molecular weight and viscosity for specific industrial applications?

asked Feb 11 in Chemical synthesis

1 answer 69 views

How can the production process of paints and coatings be optimized to minimize the amount of waste generated without compromising the quality of the final product?

asked Feb 10 in Chemical engineering

1 answer 63 views

How can chemistry students overcome limited opportunities for hands-on experimentation in order to better understand practical applications of chemical principles and theories?

answered Feb 5 in Chemical education

1 answer 108 views

Calculate the standard heat of formation (in kJ/mol) of water (H2O) given the following bond energies: H-H = 436 kJ/mol, O=O = 498 kJ/mol, H-O = 463 kJ/mol.

answered Feb 3 in Chemical bonding

1 answer 66 views

Calculate the polarization in an electrochemical cell consisting of a zinc electrode and a copper electrode. The electrode potentials of zinc and copper are -0.76 V and +0.34 V, respectively. The resistance of the electrolyte solution between the electrodes is 10 ohms, and the current flowing through the cell is 0.5 A.

answered Feb 3 in ElectroChemistry

1 answer 66 views

How does changing the pH affect the equilibrium constant (Kf) for the formation of Fe(CN)6 4- complex ion in a solution containing Fe3+ and CN- ions? Provide a detailed explanation of the effect of pH on the equilibrium constant for the reaction.

answered Feb 3 in Chemical equilibrium

1 answer 65 views

What is the mechanism of action for the metalloenzyme carbonic anhydrase? How does the coordination chemistry of the active site contribute to its catalytic activity in converting carbon dioxide to bicarbonate?

answered Jan 31 in Coordination Chemistry

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