Recent activity by ElmerAnderse

1 answer 24 views

Design a counter-current heat exchanger to cool 10,000 liters per hour of cyclohexane at 110°C down to 50°C, while heating 7,500 liters per hour of water at 25°C up to 80°C. The cyclohexane will be cooled by water which enters the heat exchanger at 90°C and exits at 60°C. The overall heat transfer coefficient is expected to be 1,000 W/m2K. Determine the required heat transfer area and the pressure drop across the heat exchanger.

answered 2 days ago in Chemical engineering

1 answer 23 views

Calculate the standard enthalpy change for the neutralization of 25.0 mL of 1.0 M hydrochloric acid (HCl) with 25.0 mL of 1.0 M sodium hydroxide (NaOH) solution at 25°C, given that the specific heat capacity of the solutions is 4.18 J/g°C, and the density of the solutions is 1.00 g/mL.

asked 2 days ago in Chemical thermodynamics

1 answer 9 views

Calculate the equilibrium constant, Kc, at 298 K for the reaction 2 SO2(g) + O2(g) ⇌ 2 SO3(g) when the initial concentrations of SO2, O2, and SO3 are 0.100 M, 0.200 M, and 0.300 M, respectively.

asked Jan 23 in Chemical equilibrium

1 answer 22 views

How can social identity theory help us understand intergroup conflict?

answered Jan 20 in Psychology

1 answer 48 views

What are the implications of trait theory for the understanding of personality disorders?

answered Jan 20 in Psychology

1 answer 18 views

When might older adults experience 'ego integrity'?

answered Jan 17 in Psychology

1 answer 5 views

Why is it important to consider comorbidity when evaluating eating disorders?

answered Jan 16 in Psychology

1 answer 18 views

What is the Baddeley's model of working memory?

answered Jan 16 in Psychology

1 answer 27 views

What is intergroup conflict?

asked Jan 13 in Psychology

1 answer 23 views

What is the role of genetics in animal behaviour?

answered Jan 13 in Psychology

2 answers 31 views

Which layer is the lithosphere located?

answered Jan 8 in Science

1 answer 24 views

When describing motion, what factor is just as important as distance?

answered Jan 8 in Science

1 answer 30 views

Fermat's principle states that what will always take the path that takes the least amount of time?

answered Dec 30, 2024 in Science

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