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22
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What is the optimum pH for the adsorption of methylene blue dye onto activated carbon and how does it affect the efficiency of the adsorption process?
answered
Feb 22
in
Surface Chemistry
0
votes
26
views
Identify the resonance structures of the nitrate ion (NO3-) and draw the resonance hybrid structure.
answered
Feb 21
in
Chemical bonding
0
votes
32
views
What is the molecular shape of the methane molecule (CH4) according to the valence shell electron pair repulsion (VSEPR) theory, and what is the explanation for it from the quantum mechanics point of view?
answered
Feb 21
in
Physical Chemistry
0
votes
40
views
How does the absorption of light by a molecule or material impact its photophysical behavior and photochemical reactivity?
answered
Feb 17
in
Quantum Chemistry
0
votes
34
views
What are the key photochemical properties of silver halide materials used in traditional film photography and how do they affect the creation and preservation of photographic images?
answered
Feb 14
in
PhotoChemistry
0
votes
71
views
How can the stability of oil-in-water emulsions be improved using natural or synthetic emulsifiers?
answered
Feb 10
in
Surface Chemistry
0
votes
32
views
How can chemistry students learn and understand experimental concepts effectively without access to laboratory equipment and facilities?
answered
Feb 5
in
Chemical education
0
votes
108
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A chemistry student is given a sample of a compound containing sulfur, oxygen, and carbon. The student needs to determine the mass percentages of each element in the compound using mass balance calculations. The sample has a total mass of 5.00 grams, and the student devises an experiment to isolate each of the three elements by chemical reactions, and the mass of each element is recorded as follows: 1.20 g sulfur, 1.80 g oxygen, and 2.00 g carbon. What are the mass percentages of sulfur, oxygen, and carbon in the compound?
answered
Jan 22
in
Analytical Chemistry
0
votes
53
views
Who conducted the Milgram Experiment?
answered
Jan 20
in
Psychology
0
votes
80
views
How does sexual trauma impact sexual behaviour?
answered
Jan 20
in
Psychology
0
votes
51
views
Compare and contrast deductive and inductive reasoning in theory evaluation
answered
Jan 16
in
Psychology
0
votes
41
views
Why is resilience considered as an important factor in positive psychology?
answered
Jan 15
in
Psychology
0
votes
33
views
What is the role of self-esteem in behaviour?
answered
Jan 15
in
Psychology
0
votes
82
views
What is the Triangular Theory of Love?
answered
Jan 15
in
Psychology
0
votes
73
views
What is a nuclear family?
answered
Jan 14
in
Psychology
0
votes
69
views
What is the main focus of the trait theory of personality?
answered
Jan 10
in
Psychology
0
votes
36
views
Wind power, solar power, hydropower, and geothermal power are called renewable sources of energy or what other term?
answered
Jan 8
in
Science
0
votes
32
views
What occurs when an unstable nucleus emits an alpha particle and energy?
answered
Jan 7
in
Science
0
votes
43
views
What kind of rays can travel thousands of meters through air and can penetrate and damage cells deep inside the body?
answered
Jan 7
in
Science
0
votes
33
views
What is the term for the use of radioactive decay to estimate the ages of fossils and rock?
answered
Jan 7
in
Science
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