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User NelleVxq8414
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Answers by NelleVxq8414
0
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43
views
What is the relationship between temperature and surface tension of a liquid, and how can it be measured experimentally using a tensiometer?
answered
Feb 24
in
Surface Chemistry
0
votes
25
views
How does the photochemical behavior of metal complexes change with the nature of ligands used in their synthesis?
answered
Feb 22
in
PhotoChemistry
0
votes
31
views
How does the molecular structure of a polymer affect its mechanical properties, and how can this be optimized for use in 3D printing applications?
answered
Feb 21
in
Materials Chemistry
0
votes
132
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Design a heat exchanger to cool down a mixture of water and ethylene glycol from 80°C to 20°C using cooling water from a nearby lake that enters at 15°C. The mixture flow rate is 10 L/min, and the desired outlet temperature is 20°C. The heat transfer coefficient for the heat exchanger is 250 W/(m².K) and the overall heat transfer coefficient is to be assumed as 350 W/(m².K). The heat capacity of the mixture is 3.8 kJ/(kg.K) and the density is 1030 kg/m³. Determine: a) the surface area of the heat exchanger required for this process,b) the volume flow rate of cooling water required, and c) the overall heat transfer rate in kW.
answered
Jan 30
in
Chemical engineering
0
votes
77
views
What is the concentration in molarity of a hydrochloric acid solution if it requires 25 mL of a 0.1 M sodium hydroxide solution to neutralize 20 mL of the acid solution?
answered
Jan 30
in
Analytical Chemistry
0
votes
122
views
What functional groups are present in compound X, and what are their respective absorption frequencies in infrared spectroscopy? How can this information be used to determine the identity of compound X?
answered
Jan 30
in
Analytical Chemistry
0
votes
95
views
What is the pH of 0.1 M solution of HCl knowing that its dissociation constant is 1.3 x 10^-4?
answered
Jan 22
in
Inorganic Chemistry
0
votes
77
views
Compare the different theories of self-concept in psychology.
answered
Jan 20
in
Psychology
0
votes
71
views
Who believed that humans are driven by unconscious desires and conflicts?
answered
Jan 20
in
Psychology
0
votes
51
views
What is Ivan Pavlov best-known for?
answered
Jan 20
in
Psychology
0
votes
90
views
What is the relationship between existential psychology and psychoanalysis?
answered
Jan 17
in
Psychology
0
votes
54
views
How does alcohol affect the brain?
answered
Jan 17
in
Psychology
0
votes
49
views
What is a criticism of reinforcement learning?
answered
Jan 15
in
Psychology
0
votes
36
views
Who proposed the 'Integrated Threat Theory'?
answered
Jan 15
in
Psychology
0
votes
85
views
Please compare the gestalt and constructivist theories of perception.
answered
Jan 15
in
Psychology
0
votes
38
views
What is the groupthink theory?
answered
Jan 15
in
Psychology
0
votes
76
views
What is social anxiety disorder?
answered
Jan 14
in
Psychology
0
votes
32
views
What is the role of the therapist in humanistic psychology?
answered
Jan 13
in
Psychology
0
votes
58
views
What did Abraham Maslow propose in his Hierarchy of Needs theory?
answered
Jan 13
in
Psychology
0
votes
90
views
Who developed the attachment theory?
answered
Jan 10
in
Psychology
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