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User Lourdes26529
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Answers by Lourdes26529
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31
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What is the optimum temperature and pressure for the production of polyethylene oxide from the monomer ethylene oxide using a catalytic reactor? And what are the key properties of the resulting polymer, such as molecular weight and functionality?
answered
Feb 22
in
Chemical synthesis
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votes
31
views
How does the intensity of light affect the rate of a photochemical reaction involving the degradation of a particular organic compound?
answered
Feb 20
in
PhotoChemistry
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34
views
What are the most effective catalysts to use in the production of ammonium nitrate fertilizer via the Haber process, and how do their properties affect the rate of the reaction and yield of the product?
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Feb 20
in
Chemical engineering
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votes
31
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What is the effect of the activated carbon dosage on the adsorption efficiency of pollutants in water using activated carbon as an adsorbent?
answered
Feb 19
in
Surface Chemistry
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votes
27
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What is the balanced chemical equation for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas, and how much of each reactant is required to produce a yield of 50g of the product?
answered
Feb 17
in
Chemical synthesis
0
votes
60
views
What is the energy level and wavelength of the transition from the first excited state to the ground state of a hydrogen atom using quantum chemical calculations?
answered
Feb 13
in
Computational Chemistry
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votes
72
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Determine the standard enthalpy change of the precipitation reaction between aqueous solutions of copper (II) sulfate and calcium hydroxide, given that the reaction produces copper (II) hydroxide, solid calcium sulfate and water as the products. The initial concentrations of the solutions are 0.1 M for copper (II) sulfate and 0.05 M for calcium hydroxide, and the reaction takes place at constant pressure and temperature of 25°C.
answered
Feb 4
in
Chemical thermodynamics
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votes
111
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Calculate the standard entropy change for the reaction of 2 moles of nitrogen gas reacting with 5 moles of oxygen gas to produce 2 moles of nitrogen monoxide gas at a constant pressure of 1 bar and 298 K. Given the standard molar entropy of nitrogen gas, oxygen gas, and nitrogen monoxide gas to be 191.6 J K-1 mol-1, 205.0 J K-1 mol-1, and 210.6 J K-1 mol-1, respectively.
answered
Feb 3
in
Chemical thermodynamics
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90
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How does changing the concentration of reactants affect the reaction rate and the resulting yield in the chemical reaction between sodium thiosulfate and hydrochloric acid?
answered
Feb 3
in
Chemical kinetics
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votes
98
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What functional groups are present in Compound X based on the IR spectrum provided? Be sure to identify specific peaks and explain their corresponding functional groups.
answered
Jan 30
in
Analytical Chemistry
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votes
60
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How can the concentration of copper ion (Cu2+) in a given sample be quantified using polarography?
answered
Jan 29
in
Analytical Chemistry
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76
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A chemistry student wants to measure the zeta potential of a colloidal solution. The student has chosen the appropriate instrument, but needs to determine the optimal pH range for the solution in order to obtain accurate and meaningful results. What is the recommended method to determine the optimal pH range for measuring the zeta potential of a colloidal solution, and how can the student ensure accurate and reliable measurements using this method?
answered
Jan 22
in
Surface Chemistry
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82
views
Who conducted the experiments on the perception of forms?
answered
Jan 20
in
Psychology
0
votes
77
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What is the main premise of the neurodevelopmental model of psychosis?
answered
Jan 20
in
Psychology
0
votes
58
views
According to social learning theory, what intermediary processes exist between our behaviours and environmental stimuli?
answered
Jan 20
in
Psychology
0
votes
128
views
Who is more likely to perceive discrimination?
answered
Jan 20
in
Psychology
0
votes
90
views
When might Maslow's hierarchy of needs be useful?
answered
Jan 20
in
Psychology
0
votes
142
views
Compare and contrast Sigmund Freud's psychosexual theory of development with Erik Erikson's psychosocial theory.
answered
Jan 17
in
Psychology
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votes
38
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What is triangulation in qualitative research?
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Jan 16
in
Psychology
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37
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What is the impact of social structure on moral development?
answered
Jan 14
in
Psychology
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