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User TatianaSteil
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0
votes
80
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What is the optimum ratio of diisocyanate and polyol required for the synthesis of polyurethane of desired properties and how does the ratio affect the physical and chemical properties of the final product?
answered
Feb 22
in
Chemical synthesis
0
votes
87
views
How does surface modification of polymers affect their adhesion properties with other materials and what are the underlying chemical factors responsible for this change?
answered
Feb 17
in
Surface Chemistry
0
votes
84
views
What is the boiling point trend of primary, secondary, and tertiary amines in comparison to their respective alkanes with the same molecular weight? Provide an explanation for the observed trend using intermolecular forces.
answered
Feb 14
in
Organic Chemistry
0
votes
168
views
Calculate the standard enthalpy change for the vaporization reaction of 25.0 g of water at its boiling point of 100°C using the following information: the molar heat of vaporization of water is 40.7 kJ/mol and the molar mass of water is 18.015 g/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
137
views
How does changing the ligands of a coordination compound affect its photochemical properties? Provide three specific examples with explanations.
answered
Feb 3
in
PhotoChemistry
0
votes
81
views
Calculate the enthalpy change for the combustion of 5.67 grams of methane (CH4) if the standard enthalpy of combustion of methane is -890.4 kJ/mol.
answered
Jan 23
in
Chemical reactions
0
votes
81
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A student carried out a chemical reaction in the laboratory and obtained 12 grams of the product. However, the theoretical yield of the product was 15 grams. Calculate the percent yield of the product.
answered
Jan 22
in
Chemical reactions
0
votes
104
views
What is the Maudsley model of family-based therapy?
answered
Jan 20
in
Psychology
0
votes
37
views
How does self-disclosure impact sexual relationships?
answered
Jan 20
in
Psychology
0
votes
85
views
What is the purpose of a scatterplot?
answered
Jan 20
in
Psychology
0
votes
97
views
What is uninvolved parenting?
answered
Jan 17
in
Psychology
0
votes
61
views
What is the theory of relative deprivation?
answered
Jan 16
in
Psychology
0
votes
166
views
Compare the effectiveness of pharmacological and non-pharmacological treatments for ADHD.
answered
Jan 16
in
Psychology
0
votes
181
views
According to the Cognitive Map Theory, what are cognitive maps?
answered
Jan 15
in
Psychology
0
votes
52
views
What is the role of media in gender socialisation?
answered
Jan 15
in
Psychology
0
votes
47
views
What is psychotherapy for personality disorders?
answered
Jan 14
in
Psychology
0
votes
97
views
What is the difference between monoamine oxidase inhibitors and selective serotonin reuptake inhibitors?
answered
Jan 14
in
Psychology
0
votes
107
views
What is psychoanalytic theory?
answered
Jan 14
in
Psychology
0
votes
98
views
What does the central route of persuasion involve?
answered
Jan 13
in
Psychology
0
votes
93
views
Why are living things considered to be renewable?
answered
Jan 8
in
Science
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