Recent activity by KellyeGraves

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Design a distillation column that can separate a mixture consisting of 40% acetone, 30% methanol, and 30% ethanol with a feed rate of 100 mol/h. The distillate should consist of at least 98% acetone, and the bottom product should contain no more than 1% acetone. You may assume that the column operates at a constant pressure and has 20 equilibrium stages. Determine the reflux ratio and the number of trays required to achieve this separation.

answered 2 days ago in Chemical engineering

1 answer 29 views

Calculate the standard enthalpy of formation of Carbon dioxide (CO2), given the enthalpies of formation of Carbon monoxide (CO) and Oxygen gas (O2) as -110.5 kJ/mol and 0 kJ/mol, respectively.

asked 2 days ago in ThermoChemistry

1 answer 34 views

When was the Beck Depression Inventory BDI first published?

asked Jan 20 in Psychology

1 answer 35 views

Who proposed the encoding specificity principle?

asked Jan 17 in Psychology

1 answer 25 views

Why might a therapist use motivational interviewing?

answered Jan 17 in Psychology

1 answer 31 views

Who developed the Bioecological Model of Human Development?

answered Jan 15 in Psychology

1 answer 20 views

What is the Bioecological Model of Human Development?

asked Jan 15 in Psychology

1 answer 29 views

According to Erikson, what is the crisis that arises during early adulthood?

answered Jan 15 in Psychology

1 answer 5 views

When does self-determination theory suggest self-esteem is important?

asked Jan 15 in Psychology

1 answer 4 views

Who is considered the father of modern psychology?

asked Jan 14 in Psychology

1 answer 42 views

What is the self-actualisation theory?

answered Jan 13 in Psychology

1 answer 16 views

What is characterized by uncontrolled cell division of abnormal cells?

asked Jan 6 in Science

1 answer 60 views

The intermolecular structure of what has spaces that are not present in liquid water?

answered Jan 2 in Science

1 answer 23 views

Defined as a difference in electric potential energy, a source of what is required in order to produce an electrical current?

answered Dec 30, 2024 in Science

1 answer 54 views

Acne and different types of cancer can affect what large organ?

asked Dec 30, 2024 in Science

1 answer 20 views

If something is in the state of matter where it has both a definite shape and volume, then what state of matter is it in?

asked Dec 27, 2024 in Science

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