Recent activity by RobertoMundy

1 answer 27 views

How does the size and shape of nanoparticles affect their catalytic activity in chemical reactions?

1 answer 27 views

What is the relationship between drug concentration and pharmacological effect, and how can this relationship be modeled mathematically in order to understand and predict drug activity in the body?

asked Feb 24 in Medicinal Chemistry

1 answer 36 views

How does the ratio of reactants affect the reaction rate in the reaction between hydrogen gas and iodine gas to form hydrogen iodide gas?

asked Feb 22 in Chemical kinetics

1 answer 23 views

What is the effect of varying the concentration of reaction intermediates on the rate of a chemical reaction and how can this information be used to design more efficient reaction pathways?

answered Feb 20 in Chemical kinetics

1 answer 38 views

What is the effect of solvation on the intermolecular interactions between ethanol and water molecules? How does the strength of these interactions change with varying concentrations of ethanol in a water-ethanol solution?

answered Feb 14 in Quantum Chemistry

1 answer 47 views

How does inadequate training for chemistry teachers affect students' understanding and performance in chemistry, and what can be done to address this issue?

answered Feb 13 in Chemical education

1 answer 93 views

How does human excess nutrient inputs contribute to eutrophication in aquatic ecosystems, and what are the potential consequences for water quality and aquatic life?

asked Feb 13 in Environmental Chemistry

1 answer 52 views

How can the physical and chemical properties of polymers be optimized to improve the efficacy and delivery of drugs in polymer-based drug delivery systems?

answered Feb 10 in Polymer Chemistry

1 answer 47 views

How can education in environmental chemistry be improved to help students better understand the impact their chemical experiments and research may have on the environment?

asked Feb 6 in Chemical education

1 answer 36 views

How can chemical modifications of nonsteroidal anti-inflammatory drugs (NSAIDs) improve their efficacy and reduce their adverse effects in the treatment of inflammatory diseases?

answered Feb 4 in Medicinal Chemistry

1 answer 74 views

Calculate the standard enthalpy change of the reaction between 100.0 mL of 0.100 M HCl(aq) and 100.0 mL of 0.100 M NaOH(aq) at 25°C, given that the specific heat capacity of the final solution is 4.18 J/g·°C and that the density of the final solution is 1.00 g/mL.

answered Feb 3 in Chemical thermodynamics

1 answer 65 views

Calculate the standard enthalpy change of the formation reaction for carbon dioxide (CO2) given the standard enthalpies of formation for carbon monoxide (CO) and oxygen gas (O2) as -110.5 kJ/mol and -249.2 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics

1 answer 117 views

What is the dipole moment of water molecule using ab initio calculations?

asked Jan 31 in Computational Chemistry

1 answer 79 views

Calculate the heat of adsorption of hydrogen gas on a platinum surface given the initial temperature of the system is 298 K and the final temperature is 330 K. The mass of the platinum surface used is 5 grams, and the amount of hydrogen adsorbed is 0.01 moles. Assume the heat capacity of the system is constant at 25 J/K.

asked Jan 23 in ThermoChemistry

1 answer 72 views

Calculate the enthalpy change for the combustion of methane gas (CH4) at constant pressure, given that the standard enthalpy of formation for CH4 is -74.8 kJ/mol and the balanced chemical equation for the combustion reaction is:CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l) The molar enthalpy of formation of CO2 is -393.5 kJ/mol and that of H2O is -285.8 kJ/mol.

asked Jan 23 in Chemical thermodynamics

1 answer 96 views

A beaker of water is placed on a hot plate, and the temperature is gradually increased. Write an equation for the rate of change of entropy with respect to time during this process, assuming the system is not in equilibrium. Use the equation to determine the rate of entropy production in the water as it is heated from 25°C to 100°C at a constant rate of 2°C/min.

asked Jan 22 in Physical Chemistry

1 answer 102 views

Identify the products of the Beckmann rearrangement of cyclohexanone oxime in the presence of concentrated sulfuric acid.

asked Jan 21 in Organic Chemistry

1 answer 73 views

Identify the number of chiral centers present in (2R,3S)-butane-1,4-diol and draw all possible stereoisomers for the compound.

asked Jan 21 in Organic Chemistry

1 answer 55 views

How does the social exchange theory explain relationships?

answered Jan 20 in Psychology

1 answer 45 views

What is the difference between normal aging and dementia?

answered Jan 20 in Psychology

Recent activity by RobertoMundy

Categories