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32
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How does the presence of surfactants in detergents affect the surface tension of water and its ability to remove dirt and stains from clothes?
answered
Feb 22
in
Surface Chemistry
0
votes
30
views
What is the most effective method for the analysis and detection of pesticide residues in food samples and how can this information be used to minimize the impact of these residues on human health?
answered
Feb 21
in
Environmental Chemistry
0
votes
32
views
How do the electronic and optical properties of graphene and other 2D materials vary with changes in temperature and doping concentration?
answered
Feb 20
in
Quantum Chemistry
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27
views
What is the effect of substrate concentration on the rate of an enzyme-catalyzed reaction and how does inhibition affect this relationship?
answered
Feb 19
in
BioChemistry
0
votes
35
views
How does the binding affinity between DNA and transcription factors affect gene expression regulation?
answered
Feb 17
in
BioChemistry
0
votes
25
views
How does the amount of activated carbon affect the adsorption of pollutants in wastewater treatment plants?
answered
Feb 17
in
Surface Chemistry
0
votes
22
views
What effect does the addition of a catalyst have on the reaction rate of the decomposition of hydrogen peroxide in the presence of yeast?
answered
Feb 17
in
Chemical kinetics
0
votes
35
views
How does the enzyme nitrogenase reduce atmospheric nitrogen to ammonia during nitrogen fixation, and what are the factors that influence its activity?
answered
Feb 14
in
BioChemistry
0
votes
56
views
What are the common challenges that students face while attempting to understand the concepts of quantum mechanics in chemistry and what are the effective strategies to overcome these difficulties?
answered
Feb 12
in
Chemical education
0
votes
80
views
Determine the oxidation state of the chromium atom in the compound potassium dichromate (K2Cr2O7).
answered
Feb 4
in
Inorganic Chemistry
0
votes
85
views
Calculate the resistance of an electrochemical cell constructed by using a copper electrode in a 1M copper (II) sulfate solution and a zinc electrode in a 1M zinc sulfate solution. The measured potential difference of the cell is 1.45 volts. The area of each electrode is 10cm² and the length of wire connecting the electrodes is 30cm with a cross-sectional area of 1 mm². The conductivity of copper (II) sulfate and zinc sulfate solutions at the given concentration is 98.3% and 89.9% respectively. What is the resistance (in ohms) of the electrochemical cell?
answered
Feb 3
in
ElectroChemistry
0
votes
69
views
Calculate the enthalpy change for the polymerization of propylene to polypropylene, given the enthalpy of formation of propylene is -103.8 kJ/mol and the enthalpy of formation of polypropylene is -45.4 kJ/mol. Assume the reaction occurs at constant pressure and temperature.
answered
Jan 23
in
ThermoChemistry
0
votes
145
views
Why is understanding sexual orientation fluidity important in psychology?
answered
Jan 20
in
Psychology
0
votes
83
views
When evaluating behaviour modification theory, what is a major limitation of the theory?
answered
Jan 16
in
Psychology
0
votes
58
views
Who was Carl Rogers?
answered
Jan 15
in
Psychology
0
votes
58
views
What is generativity?
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Jan 14
in
Psychology
0
votes
40
views
What is solution-focused brief therapy?
answered
Jan 14
in
Psychology
0
votes
54
views
What is ego psychology?
answered
Jan 13
in
Psychology
0
votes
44
views
Which vitamin is made in the skin when it is exposed to sunlight?
answered
Jan 8
in
Science
0
votes
122
views
Which germ layers are essential for animal embryos to grow and develop into a body?
answered
Jan 8
in
Science
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