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1
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What is the effect of the concentration of a detergent solution on its ability to lower the surface tension of water?
asked
Feb 17
in
Surface Chemistry
0
votes
1
answer
55
views
What type of bond exists between a carbon atom and an oxygen atom in CO2?
asked
Feb 13
in
Chemical bonding
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votes
1
answer
132
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Calculate the standard enthalpy change and entropy change for the reaction: 2Fe(s) + 3/2O2(g) -> Fe2O3(s) Given the standard enthalpies of formation of Fe(s), O2(g), and Fe2O3(s) are -0.44 kJ/mol, 0 kJ/mol, and -826 kJ/mol, respectively. Also, the standard molar entropy of Fe2O3(s) is 87.4 J/(mol K).
asked
Feb 3
in
Inorganic Chemistry
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1
answer
65
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How can gas chromatography be used to determine the percentage composition of a mixture containing three unknown compounds?
asked
Jan 29
in
Analytical Chemistry
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1
answer
68
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Calculate the enthalpy change for the adsorption of nitrogen gas on the surface of activated charcoal, given that the adsorption pressure is 1 atm at a temperature of 298 K. The quantity of nitrogen gas adsorbed is 0.01 moles per gram of charcoal, and the heat of combustion of the same amount of charcoal is -35.4 kJ/mol.
asked
Jan 23
in
ThermoChemistry
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1
answer
68
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Calculate the bond length between two oxygen atoms in an O2 molecule, given that the O-O bond energy is 498 kJ/mol and the reduced mass of the system is 15.9994 g/mol.
asked
Jan 23
in
Chemical bonding
0
votes
1
answer
102
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A student is given a galvanic cell consisting of a zinc electrode and a copper electrode. If the concentration of zinc ions in the zinc half-cell is 0.1 M and the concentration of copper ions in the copper half-cell is 1.0 M, what is the corrosion potential of the zinc electrode at standard conditions? (Assume that the standard electrode potential of copper is +0.34 V and that of zinc is -0.76 V.)
asked
Jan 22
in
ElectroChemistry
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1
answer
45
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What are the main criticisms of the behavioural perspective?
asked
Jan 20
in
Psychology
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1
answer
115
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According to Stanley Milgram's obedience studies, how far are individuals willing to go in obeying authority?
asked
Jan 17
in
Psychology
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1
answer
38
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What is the relationship between motivation and behaviour?
asked
Jan 17
in
Psychology
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0
answers
116
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When was the Attachment Theory developed?
asked
Jan 17
in
Psychology
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1
answer
49
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What is the main premise of cognitive dissonance theory?
asked
Jan 16
in
Psychology
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1
answer
73
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What are the limitations of the disengagement theory?
asked
Jan 16
in
Psychology
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votes
1
answer
56
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Where does the humanistic perspective focus in psychology?
asked
Jan 16
in
Psychology
0
votes
1
answer
69
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According to the cognitive-behavioural theory, what is the relationship between our thoughts, feelings, and behaviours?
asked
Jan 15
in
Psychology
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1
answer
47
views
According to Erikson, what is the crisis that arises during early adulthood?
asked
Jan 15
in
Psychology
0
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1
answer
78
views
Who developed the theory of Discursive Institutionalism?
asked
Jan 15
in
Psychology
0
votes
1
answer
66
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What is the working memory model?
asked
Jan 14
in
Psychology
0
votes
1
answer
44
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While some climate regions have multiple layers, arid regions are poor for development of what?
asked
Jan 8
in
Science
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1
answer
29
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What happens to the level of relative humidity in the evening as air temperature declines?
asked
Jan 6
in
Science
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