Recent activity by WallaceMaria

1 answer 34 views

What is the pH of a solution if the pH meter reading is 7.5 and the temperature of the solution is 25°C?

1 answer 28 views

What is the optimal reaction conditions to maximize the yield of polyethylene in the synthesis of polyethylene from ethylene monomer?

asked Feb 21 in Chemical synthesis

1 answer 36 views

What is the most effective polymer characterization technique for determining the molecular weight distribution of a polymeric material and how does it work?

answered Feb 21 in Polymer Chemistry

1 answer 28 views

What is the hybridization of the carbon atom in the molecule CH4?

answered Feb 20 in Chemical bonding

1 answer 30 views

What is the heat of sublimation for dry ice (solid carbon dioxide) if it requires 25.2 kJ of energy to sublime 1 mole of dry ice at its standard-state conditions?

asked Feb 20 in ThermoChemistry

1 answer 12 views

How does the binding of substrates to the active site of an enzyme affect the catalytic reaction rate? Use computational chemistry methods to compare the reaction rate of a free substrate versus a substrate that is bound to the enzyme's active site.

answered Feb 17 in Computational Chemistry

1 answer 23 views

How does the binding affinity between a specific protein and its ligand vary with temperature, and how can molecular dynamics simulations be used to predict and understand these changes?

answered Feb 17 in Computational Chemistry

1 answer 34 views

What are the best polymer-based adhesives and sealants for bonding and sealing plastics, metals, and ceramics in automotive manufacturing, and what properties of these polymers make them well-suited for this application?

answered Feb 17 in Polymer Chemistry

1 answer 31 views

What are the equilibrium concentrations of products and reactants when 0.50 moles of N2 and 0.50 moles of H2 are mixed in a 1.00 L flask and allowed to react at 300 K, with a Kc value of 0.129?

answered Feb 17 in Chemical equilibrium

1 answer 63 views

What is the effect of changing the hydrophobic and hydrophilic properties of a surfactant on its ability to form micelles in aqueous solution?

answered Feb 17 in Surface Chemistry

1 answer 67 views

How does magnetic resonance spectroscopy aid in the determination of the molecular structure and conformation of organic compounds?

asked Feb 13 in Physical Chemistry

1 answer 30 views

How can the photochemical properties of fluorescent dyes be used to improve the efficiency of solar cells?

asked Feb 10 in PhotoChemistry

1 answer 36 views

How can the medicinal chemistry approach be used to develop new treatments for inflammatory bowel disease? What specific chemical compounds could be targeted to address the inflammation in the gastrointestinal tract and improve patient outcomes?

answered Feb 10 in Medicinal Chemistry

1 answer 48 views

How can the boiling point of a substance be predicted based on its type and strength of intermolecular forces? Provide a specific example of two different substances and explain their difference in boiling points based on their intermolecular forces.

asked Feb 6 in Chemical bonding

1 answer 30 views

How can chemistry educators make the subject more engaging and interesting for students who lack interest in the subject?

answered Feb 4 in Chemical education

1 answer 34 views

How can chemistry education programs prioritize the inclusion and awareness of safety protocols in laboratory settings to ensure the well-being of students and prevent accidents and incidents in the future?

asked Feb 4 in Chemical education

1 answer 34 views

How can chemistry be effectively communicated to the general public in terms of its importance and impact on society and the economy?

answered Feb 4 in Chemical education

1 answer 71 views

Calculate the standard Gibbs free energy change for the electrochemical reaction of zinc and copper ions: Zn(s) + Cu2+(aq) → Cu(s) + Zn2+(aq)Given the following standard electrode potentials: E°(Cu2+(aq) + 2e- → Cu(s)) = 0.34 V E°(Zn2+(aq) + 2e- → Zn(s)) = -0.76 V Assume standard conditions (25°C and 1 atm pressure) and that the concentrations of the copper and zinc ions are both 1 mol/L.

asked Feb 3 in ElectroChemistry

1 answer 56 views

Calculate the standard enthalpy change for the reaction of the combustion of liquid ethylene glycol $(C_2H_6O_2)$ when 500g of the compound is burned completely with excess oxygen gas, given the enthalpies of formation of $CO_2$ (-393.5 kJ/mol), $H_2O$ (-285.8 kJ/mol), and $C_2H_6O_2$ (-694.3 kJ/mol).

answered Feb 3 in Chemical thermodynamics

1 answer 87 views

How does changing the concentration of a catalyst affect the rate of the catalyzed reaction? Provide experimental data to support your answer.

asked Jan 31 in Physical Chemistry

Recent activity by WallaceMaria

Categories