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0
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21
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What is the Lewis structure for the molecule of carbon dioxide, and what is the official name of this type of molecular geometry?
answered
5 days
ago
in
Chemical bonding
0
votes
27
views
What is the electronegativity difference between a nitrogen atom (EN = 3.04) and an oxygen atom (EN = 3.44)?
answered
5 days
ago
in
Chemical bonding
0
votes
24
views
What is the effect of concentration of reactants on the reaction rate and efficiency of a chemical reaction?
answered
6 days
ago
in
Chemical kinetics
0
votes
28
views
How can we increase diversity in the chemistry field and create equal opportunities for underrepresented groups?
answered
Feb 13
in
Chemical education
0
votes
28
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What are the potential harmful effects of chemical pollutants on the environment, and how can environmental chemists work to mitigate these effects?
answered
Feb 12
in
Chemical education
0
votes
30
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Calculate the standard enthalpy of formation of water (H2O) given the following information: ΔHf° of H2(g) = 0 kJ/molΔHf° of O2(g) = 0 kJ/molΔHf° of H2O2(l) = -188.2 kJ/mol
answered
Feb 3
in
ThermoChemistry
0
votes
68
views
Calculate the standard enthalpy change for the given reaction using the given data:2H2(g) + O2(g) --> 2H2O(l)Given:ΔHf°(H2O(l)) = -285.83 kJ/molΔHf°(O2(g)) = 0 kJ/molΔHf°(H2(g)) = 0 kJ/mol
answered
Feb 3
in
Chemical thermodynamics
0
votes
66
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Calculate the enthalpy change for the hydrolysis of sucrose given the following information: Sucrose (C12H22O11) reacts with water to form glucose (C6H12O6) and fructose (C6H12O6). Delta H for the reaction is -190 kJ/mol. The enthalpy of formation for sucrose is -2227 kJ/mol, the enthalpy of formation for glucose is -1274 kJ/mol, and the enthalpy of formation for fructose is -1266 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
61
views
Calculate the corrosion current density of a stainless steel electrode in a 0.5 M HCl solution at 25 degrees Celsius, given that the polarization resistance of the electrode is 200 ohms and the corrosion potential is -0.3 V vs. the standard hydrogen electrode (SHE).
answered
Jan 23
in
ElectroChemistry
0
votes
54
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A chemistry student wants to investigate the adsorption of a certain gas onto a solid surface. The student conducts an experiment and obtains the following data for different pressures of the gas:| Pressure (p) / atm | Quantity adsorbed (q) / g ||---|---|| 0.1 | 0.12 || 0.2 | 0.21 || 0.3 | 0.29 || 0.4 | 0.36 || 0.5 | 0.41 || 0.6 | 0.49 |Using the Langmuir adsorption isotherm, the student wants to determine the maximum amount of the gas that can be adsorbed onto the surface (q_max) and the rate constant for the adsorption process (k_ads). What are the values of q_max and k_ads for this gas-surface sys
answered
Jan 22
in
Surface Chemistry
0
votes
23
views
According to the social learning theory, how do we learn new behaviours?
answered
Jan 20
in
Psychology
0
votes
20
views
According to Pauli's archetype theory, what is the shadow?
answered
Jan 20
in
Psychology
0
votes
21
views
How does brain plasticity relate to biopsychology?
answered
Jan 17
in
Psychology
0
votes
74
views
How has evolutionary psychology contributed to the understanding of mental illness?
answered
Jan 16
in
Psychology
0
votes
37
views
Why is peer review important for theory evaluation?
answered
Jan 16
in
Psychology
0
votes
24
views
According to Greenwald and Banaji, why do individuals have implicit biases?
answered
Jan 16
in
Psychology
0
votes
31
views
What are some criticisms of the Schachter-Singer theory of emotion?
answered
Jan 16
in
Psychology
0
votes
52
views
What is the theory behind visual attention?
answered
Jan 16
in
Psychology
0
votes
32
views
What is neuropathic pain?
answered
Jan 15
in
Psychology
0
votes
30
views
What is trauma?
answered
Jan 14
in
Psychology
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