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1
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22
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How does the rate of reaction vary with changes in the concentration of reactants and products in a given reaction mechanism?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
23
views
What is the enthalpy of formation of magnesium oxide (MgO) given the enthalpy of formation of magnesium (Mg) is -601 kJ/mol and the enthalpy of formation of oxygen (O2) is 0 kJ/mol?
asked
6 days
ago
in
ThermoChemistry
0
votes
1
answer
28
views
What is the coordination geometry of the metal ion in the active site of carbonic anhydrase enzyme and how does it affect the function of the enzyme?
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
22
views
How does the concentration of salt affect the formation of protein-protein complexes?
asked
6 days
ago
in
BioChemistry
0
votes
1
answer
16
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?
asked
Feb 17
in
Chemical kinetics
0
votes
1
answer
34
views
What are the different modes of action of various organic ultraviolet (UV) filters used in sunscreen lotions and how do they protect the skin from harmful UV radiation?
asked
Feb 14
in
PhotoChemistry
0
votes
1
answer
10
views
How can the purity of a crude sample of a chemical be improved through the use of various purification techniques, such as distillation, chromatography or crystallization, and what factors should be considered in selecting the most appropriate method for the specific chemical being purified? Develop a process to achieve a 95% pure sample of the desired chemical.
asked
Feb 10
in
Chemical engineering
0
votes
1
answer
58
views
What is the coordination chemistry behind the catalytic activity of the metalloenzyme carbonic anhydrase, and how does the geometry of the active site play a crucial role in its function?
asked
Jan 31
in
Coordination Chemistry
0
votes
1
answer
86
views
What is the concentration of iron (II) ions in a water sample if the absorbance of the sample at a wavelength of 565 nm is measured to be 0.842 and it was found that a 1 cm cuvette contains 1.25 x 10^-4 moles of iron (II) ions? (The molar absorptivity of iron (II) ions at 565 nm is 1.9 x 10^4 L/mol cm).
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
44
views
A compound containing only potassium and chlorine has a mass of 74.55 grams. When this compound was analyzed, it was found to have 37.43 grams of potassium and 37.12 grams of chlorine. Determine the empirical and molecular formulas of this compound.
asked
Jan 22
in
Inorganic Chemistry
0
votes
1
answer
77
views
A chemistry student needs to calculate the standard enthalpy change for the combustion reaction of methane gas (CH4) at 298 K and 1 atm pressure. The equation for the reaction is:CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l)Given the following standard enthalpies of formation at 298 K:ΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/molΔHf(CH4) = -74.8 kJ/molCalculate ΔHrxn, the standard enthalpy change for the combustion reaction of methane gas.
asked
Jan 22
in
Chemical thermodynamics
0
votes
1
answer
32
views
Please evaluate the social penetration theory.
asked
Jan 20
in
Psychology
0
votes
1
answer
48
views
How do evolutionary theories contribute to biopsychology?
asked
Jan 17
in
Psychology
0
votes
1
answer
33
views
According to the cognitive-behavioural theory, how can a person with a phobia overcome their fear?
asked
Jan 17
in
Psychology
0
votes
0
answers
63
views
When did the False Memory Experiment take place?
asked
Jan 17
in
Psychology
0
votes
1
answer
25
views
What is the behaviourist theory?
asked
Jan 16
in
Psychology
0
votes
1
answer
39
views
Please evaluate the exogenous attention theory.
asked
Jan 16
in
Psychology
0
votes
1
answer
36
views
Who developed the theory of cultural dimensions?
asked
Jan 15
in
Psychology
0
votes
1
answer
19
views
What is naturalistic observation?
asked
Jan 15
in
Psychology
0
votes
1
answer
63
views
What are the benefits of positive psychology interventions?
asked
Jan 15
in
Psychology
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