Recent activity by ValentinaWil

1 answer 34 views

What is the effect of increasing the concentration of the reaction product on the rate of reaction, using the reaction between hydrogen peroxide and potassium iodide as an example?

answered Feb 22 in Chemical kinetics

1 answer 29 views

How does the particle size of nanomaterials affect their catalytic activity in a specific reaction, and what is the optimal size range for maximum efficiency?

answered Feb 22 in Materials Chemistry

1 answer 16 views

What is the effect of varying the number of layers of graphene on its electronic and physical properties, and how can this be utilized for optimizing graphene-based electronic devices?

asked Feb 21 in Materials Chemistry

1 answer 30 views

How does the molecular weight and composition of a polymer affect its properties for use in 3D printing?

answered Feb 21 in Materials Chemistry

1 answer 33 views

What is the molecular geometry and polarity of carbon dioxide (CO2)?

asked Feb 21 in Inorganic Chemistry

1 answer 32 views

What is the impact of the industrial project XYZ Chemical Company on the water quality of the nearby river and how can it be mitigated through the application of appropriate wastewater treatment technologies?

answered Feb 20 in Environmental Chemistry

1 answer 34 views

What is the hybridization of the carbon atoms in the molecule C2H4 (ethene)?

answered Feb 20 in Chemical bonding

1 answer 26 views

How does the crosslink density of a bioink affect the mechanical properties of tissue scaffolds in tissue engineering applications?

answered Feb 19 in Materials Chemistry

1 answer 24 views

What is the coordination number and geometry of the complex formed between Cu2+ and ethylenediamine (en)?

asked Feb 19 in Coordination Chemistry

1 answer 27 views

How does the coordination environment of the metal ion in the active site of metalloenzymes and metalloproteins affect their catalytic activity?

answered Feb 19 in Coordination Chemistry

1 answer 32 views

How do the electronic and optical properties of quantum dots and quantum wells change as their size and shape vary?

asked Feb 14 in Quantum Chemistry

1 answer 39 views

How can we optimize the composition of a paint formulation to achieve the desired color, durability, and viscosity, while minimizing the use of toxic or harmful chemicals?

answered Feb 14 in Chemical engineering

1 answer 38 views

How does the use of Monte Carlo simulations improve our understanding of phase transitions in chemical systems?

asked Feb 13 in Computational Chemistry

1 answer 60 views

How do heavy metals, such as lead and mercury, impact the quality of soil and water in the environment and what are the most effective methods for mitigating this toxicity?

answered Feb 13 in Environmental Chemistry

1 answer 56 views

What is the impact of heavy metal contamination in soil on the growth and quality of crops commonly grown in agricultural areas affected by industrial pollution?

asked Feb 13 in Environmental Chemistry

1 answer 105 views

What is the total number of electrons transferred when a current of 2.0 A flows through a solution of CuSO4 for 15 minutes? Given that the molar mass of CuSO4 is 159.61 g/mol and the Faraday constant is 96,485 C/mol.

asked Feb 13 in ElectroChemistry

1 answer 33 views

How can chemistry students increase their chances of finding internships and job opportunities in fields that interest them, despite the limited availability of such opportunities?

answered Feb 5 in Chemical education

1 answer 111 views

Determine the oxidation state of chlorine in HClO3.

answered Feb 4 in Chemical reactions

1 answer 63 views

Calculate the standard enthalpy change of the formation of water (H2O) given the following data:- Standard enthalpy of formation of hydrogen gas (H2) = 0 kJ/mol- Standard enthalpy of formation of oxygen gas (O2) = 0 kJ/mol- Standard enthalpy of formation of water vapor (H2O(g)) = -241.8 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 56 views

Calculate the standard enthalpy change of the following reduction reaction if the standard enthalpy of formation of FeO is -272.0 kJ/mol and that of Fe is 0 kJ/mol.FeO(s) + H2(g) → Fe(s) + H2O(l)

answered Feb 3 in ThermoChemistry

Categories