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User KathiFatnown
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Recent activity by KathiFatnown
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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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