Recent activity by CharleneKeen

1 answer 33 views

Design a heat exchanger for a process where hot air (80°C) needs to be cooled down to 30°C using water (10°C) as the cooling medium. The flow rate of hot air is 2 kg/s and the desired outlet temperature of the cooled air is 35°C. The maximum allowable pressure drop for air side is 50 kPa and for water side is 100 kPa. Design the heat exchanger using the LMTD (logarithmic mean temperature difference) method and calculate the required area of heat transfer.

asked 1 day ago in Chemical engineering

1 answer 34 views

Design a chemical reactor system for the production of 500 kg/hr of methanol (CH3OH) through the reaction of carbon monoxide (CO) and hydrogen gas (H2). The reactor should operate at a pressure of 100 atm and a temperature of 300°C, and must achieve a minimum conversion rate of 80%. Determine the type of reactor needed and its dimensions, as well as the required flow rates of CO and H2 gas to meet the production target.

asked 2 days ago in Chemical engineering

1 answer 73 views

What is the concentration of chloride ions in a given salt solution using a Chloride ion-selective electrode with a potential reading of -0.35 V?

answered 6 days ago in Analytical Chemistry

1 answer 15 views

Who is more likely to have negative attitudes towards minority groups?

answered Jan 20 in Psychology

1 answer 20 views

How does the concept of epistemic injustice relate to indigenous psychology?

answered Jan 17 in Psychology

1 answer 47 views

According to the humanistic-existential theory, what factors are necessary for achieving self-actualisation?

answered Jan 17 in Psychology

1 answer 45 views

How does the narrative theory view recovery after trauma?

asked Jan 17 in Psychology

1 answer 5 views

How can experimental designs aid in theory evaluation?

asked Jan 16 in Psychology

1 answer 15 views

When evaluating cognitive theories, how can they be tested using brain imaging techniques?

asked Jan 16 in Psychology

1 answer 40 views

What is the name of Bronfenbrenner's ecological systems theory?

asked Jan 14 in Psychology

1 answer 22 views

How does gender influence adult development?

answered Jan 14 in Psychology

1 answer 20 views

What needs to be increased to change a solid into a liquid or gas?

asked Jan 7 in Science

1 answer 44 views

What is the term for geological activity that occurs within a plate?

answered Jan 7 in Science

1 answer 17 views

What is the term for biologically meaningful dna sequences?

answered Jan 7 in Science

1 answer 43 views

The urea cycle, a set of biochemical reactions that produces urea from ammonium ions to prevent toxicity, occurs to some extent in the kidney, but primarily in what organ?

answered Jan 2 in Science

1 answer 18 views

Reactant concentrations are highest at which part of a reaction?

answered Dec 31, 2024 in Science

1 answer 23 views

In an endothermic reaction, what is absorbed by the reaction?

asked Dec 31, 2024 in Science

1 answer 20 views

If force is applied further away from a pivot point, than what kind of acceleration will be greater?

answered Dec 27, 2024 in Science

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