Recent activity by KathiFatnown

1 answer 82 views

How does the presence of a product affect the rate of a chemical reaction? Investigate the effect of varying concentration of a product on the rate of reaction using a specific chemical reaction of your choice.

answered Feb 22 in Chemical kinetics

1 answer 82 views

What is the optimal reaction temperature and catalyst concentration for the synthesis of polyacrylonitrile from acrylonitrile monomer using ammonium persulfate as the initiator?

asked Feb 21 in Chemical synthesis

1 answer 84 views

What is the mechanism of the nucleophilic substitution reaction between 2-bromopropane and potassium hydroxide in ethanol as the solvent?

asked Feb 21 in Organic Chemistry

1 answer 83 views

What is the Lewis structure for the molecule carbon dioxide (CO2)?

asked Feb 20 in Chemical bonding

1 answer 85 views

How does the insulin signaling pathway regulate carbohydrate metabolism in liver cells, and what role do enzymes such as hexokinase and glycogen synthase play in this process?

asked Feb 20 in BioChemistry

1 answer 86 views

What is the coordination environment of zinc in the active site of the enzyme carbonic anhydrase, and how does it contribute to the catalytic activity of the enzyme?

answered Feb 19 in Coordination Chemistry

1 answer 99 views

How does the concentration of reactants and catalyst affect the selectivity of the reaction of hydrogenation of aromatic compounds, specifically the conversion of 1,3-butadiene to butene isomers?

answered Feb 19 in Chemical kinetics

1 answer 71 views

How does the inhibition of the enzyme fatty acid synthase (FAS) affect the intracellular signaling pathways involved in regulating lipid metabolism?

answered Feb 13 in BioChemistry

1 answer 122 views

What is the hybridization of the central carbon atom in the molecule of ethane (C2H6)?

asked Feb 13 in Chemical bonding

1 answer 170 views

How does the change in concentration of the reactants in a second-order reaction affect the reaction rate?

answered Feb 13 in Chemical kinetics

1 answer 160 views

What is the effect of concentration changes of reactants on the reaction rate in a complex reaction mechanism?

asked Feb 13 in Chemical kinetics

1 answer 122 views

What is the specific procedure for preparing 2,4,6-trinitrotoluene from toluene and nitric acid, including the necessary reagents, reaction conditions, and safety precautions to be taken throughout the process?

asked Feb 13 in Chemical synthesis

1 answer 90 views

What are the intermolecular forces present in hexane?

asked Feb 13 in Chemical bonding

1 answer 108 views

How can the properties of semiconductors be modified to enhance their efficiency in electronic devices?

asked Feb 10 in Materials Chemistry

1 answer 84 views

How can the performance of polymer-based electronic materials be optimized through the control of molecular weight and branching?

answered Feb 10 in Polymer Chemistry

1 answer 136 views

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

asked Feb 5 in Chemical education

1 answer 168 views

Design a treatment system for the removal of heavy metals from industrial wastewater using an ion exchange process for a chemical manufacturing plant operating in the city with strict regulations regarding the disposal of wastewater.

asked Feb 4 in Chemical engineering

1 answer 132 views

Calculate the standard enthalpy change of the reaction below at 298K.Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)Given the following standard enthalpies of formation (ΔHf°):ΔHf°[Fe2O3(s)] = -824.2 kJ/molΔHf°[Fe(s)] = 0 kJ/molΔHf°[CO(g)] = -110.5 kJ/molΔHf°[CO2(g)] = -393.5 kJ/mol. Also, calculate the change in standard entropy of the system (ΔS°) and determine whether the reaction is spontaneous or not.

answered Feb 3 in Inorganic Chemistry

1 answer 128 views

How does changing the stoichiometry of reactants in a chemical reaction affect the rate of reaction, and how can we experimentally investigate this relationship?

asked Feb 3 in Chemical kinetics

1 answer 89 views

Calculate the lattice energy of potassium oxide (K2O) given that the ionic radii of K+ and O2- are 152 pm and 140 pm respectively, and the lattice enthalpy of formation of K2O is -3803 kJ/mol.

answered Jan 23 in Inorganic Chemistry

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