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Answers by AmyNowland4
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How does the initial concentration of reactant(s) affect the reaction rate and yield of the reaction between hydrochloric acid and sodium thiosulfate?
answered
Feb 22
in
Chemical kinetics
0
votes
26
views
How does the photochemical behavior of dyes and pigments affect their usefulness in applications such as color photography?
answered
Feb 22
in
PhotoChemistry
0
votes
22
views
What is the most efficient and sustainable system for producing a new line of cosmetic products that reduces waste and incorporates eco-friendly materials, while ensuring product safety and efficacy?
answered
Feb 21
in
Chemical engineering
0
votes
29
views
How does the concentration of sulfur dioxide in the atmosphere affect the pH level of rainwater in areas experiencing acid rain, and what are the potential ecological consequences of these changes in pH?
answered
Feb 19
in
Environmental Chemistry
0
votes
31
views
How does the change in the oxidation state of a molecule affect its electronic structure and the rate of electron transfer reactions?
answered
Feb 18
in
Quantum Chemistry
0
votes
24
views
How do the surface properties of a polymer affect its adhesive properties? Specifically, how does the polymer's surface energy, roughness, and chemical composition affect its adhesion to different types of substrates?
answered
Feb 17
in
Polymer Chemistry
0
votes
39
views
How does the accuracy of ab initio calculations of molecular properties compare to experimentally determined data?
answered
Feb 17
in
Computational Chemistry
0
votes
39
views
What are the key structural features and functional groups required in designing drugs to effectively target and treat neurological disorders such as Alzheimer's and Parkinson's?
answered
Feb 12
in
Medicinal Chemistry
0
votes
31
views
How can the performance of polymer-based adhesives and sealants be optimized through the control of molecular weight, cross-linking, and functional group incorporation?
answered
Feb 10
in
Polymer Chemistry
0
votes
39
views
How can the mechanical and thermal properties of polymer-based composites be optimized for use in aerospace applications, and what are the most promising types of reinforcement materials and processing techniques for achieving these goals?
answered
Feb 7
in
Polymer Chemistry
0
votes
46
views
How can schools and universities increase the availability and accessibility of chemistry-related extracurricular activities for students who are interested in pursuing a career in chemistry?
answered
Feb 5
in
Chemical education
0
votes
38
views
How can chemistry educators improve the presentation of chemistry concepts to make them more relatable and applicable to everyday life?
answered
Feb 4
in
Chemical education
0
votes
99
views
Calculate the standard enthalpy change for the reaction of 2 moles of liquid ethanol with 3 moles of gaseous oxygen to form 2 moles of liquid acetic acid and 3 moles of gaseous water at 1 atm and 25°C, given the standard enthalpy of formation of ethanol, acetic acid, and water are -277.6 kJ/mol, -487.5 kJ/mol, and -285.8 kJ/mol respectively.
answered
Feb 3
in
Chemical thermodynamics
0
votes
90
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What is the difference between an aldehyde and a ketone in terms of their functional group? Provide an example of an aldehyde and a ketone, and explain how their properties differ due to the presence or absence of a hydrogen atom attached to the carbonyl carbon.
answered
Jan 31
in
Organic Chemistry
0
votes
73
views
What is the amount of copper ions present in a sample if 5.25 grams of the sample produces a current of 2.35 A for 2 hours during coulometry analysis? The molar mass of copper is 63.55 g/mol and the sample contains only copper ions.
answered
Jan 30
in
Analytical Chemistry
0
votes
78
views
Calculate the enthalpy change for the reaction: 2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g) given the enthalpies of formation of H2O(g), SO2(g), and H2S(g) are -241.8 kJ/mol, -296.8 kJ/mol, and -20.2 kJ/mol, respectively.
answered
Jan 23
in
ThermoChemistry
0
votes
63
views
What is the minimum audible threshold for humans?
answered
Jan 20
in
Psychology
0
votes
44
views
What is object permanence?
answered
Jan 20
in
Psychology
0
votes
50
views
According to Gardner's theory of multiple intelligences, what type of intelligence is related to natural history?
answered
Jan 15
in
Psychology
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votes
67
views
What is the main premise of social exchange theory?
answered
Jan 15
in
Psychology
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