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0
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33
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How does the molecular structure of surfactants affect their ability to lower surface tension and emulsify substances?
answered
Feb 21
in
Surface Chemistry
0
votes
60
views
How does the regulation of glycolysis differ under aerobic and anaerobic conditions in the human body?
answered
Feb 13
in
BioChemistry
0
votes
47
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How can education in environmental chemistry be improved to help students better understand the impact their chemical experiments and research may have on the environment?
answered
Feb 6
in
Chemical education
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40
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How can knowledge of chemical reactions and properties be applied to real-world scenarios such as environmental pollution, drug development, or food quality control?
answered
Feb 5
in
Chemical education
0
votes
112
views
Calculate the standard enthalpy and standard entropy change at 298 K for the following reaction: 2Fe(s) + 3/2O2(g) → Fe2O3(s) Given that the standard enthalpies of formation for Fe(s), O2(g), and Fe2O3(s) are 0 kJ/mol, 0 kJ/mol, and -826 kJ/mol respectively. Also, the standard molar entropy of Fe2O3(s) is 87.4 J/K/mol.
answered
Feb 3
in
Inorganic Chemistry
0
votes
78
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How does changing the pH of a redox reaction affect the equilibrium position and what is the mathematical equation used to calculate the shift in equilibrium? Provide an example of a redox reaction and calculate the new equilibrium concentrations of the products and reactants when the pH is increased or decreased.
answered
Feb 3
in
Chemical equilibrium
0
votes
110
views
What functional group(s) are present in an unknown compound that has an absorption peak at 1720 cm⁻¹ in its infrared spectrum? How do you interpret this peak to identify the specific type(s) of functional group(s) present in the compound?
answered
Jan 30
in
Analytical Chemistry
0
votes
84
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Calculate the enthalpy change for the dissolution of 5 grams of sodium chloride in 50 mL of water if the temperature of the solution decreases from 25 °C to 21 °C. The density of the solution is 1.0 g/mL and the specific heat capacity of the solution is 4.18 J/g°C. (Assume the heat exchange between the solution and the surroundings is negligible)
answered
Jan 23
in
ThermoChemistry
0
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84
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Calculate the bond length between two carbon atoms in a molecule of ethene, assuming a carbon-carbon bond order of 1.5. (Hint: Use the empirical formula for calculating bond length: bond length = sum of covalent radii of the two atoms)
answered
Jan 23
in
Chemical bonding
0
votes
83
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What is the mechanism of the reaction between propyne and hydrogen chloride, and what is the product obtained?
answered
Jan 21
in
Organic Chemistry
0
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68
views
Who developed the information-motivation-behavioural skills model?
answered
Jan 20
in
Psychology
0
votes
38
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Where does pragmatism see the role of theory?
answered
Jan 16
in
Psychology
0
votes
76
views
According to Erik Erikson's psychosocial theory, what is the characteristic of the stage of intimacy vs. isolation in young adulthood?
answered
Jan 15
in
Psychology
0
votes
77
views
What is the difference between intensity and loudness?
answered
Jan 15
in
Psychology
0
votes
66
views
What is the difference between episodic memory and semantic memory?
answered
Jan 14
in
Psychology
0
votes
57
views
What is the difference between explicit memory and implicit memory?
answered
Jan 14
in
Psychology
0
votes
81
views
Which primate group generally lives alone?
answered
Jan 8
in
Science
0
votes
22
views
What type of vertebrates control body temperature to just a limited extent from the outside by changing behavior?
answered
Jan 8
in
Science
0
votes
68
views
What is the process of isolating a specific gene and then making a copy of it for use in gene therapy?
answered
Jan 7
in
Science
0
votes
82
views
What are the two types of fermentation?
answered
Jan 6
in
Science
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