Recent activity by EssieSkiller

1 answer 10 views

Given a mixture of benzene and toluene, with a mole fraction of 0.6 and 0.4 respectively, design a distillation column with a reflux ratio of 2.5 to achieve a product purity of at least 99% for both components.

answered Feb 4 in Chemical engineering

1 answer 76 views

What is the percent composition of carbon, hydrogen, and nitrogen in a sample of caffeine? Use elemental analysis to determine the answer.

asked Jan 31 in Analytical Chemistry

1 answer 83 views

What factors determine the bond strength of a molecule and how can we predict it using chemical bonding principles? Use examples to support your answer.

answered Jan 31 in Chemical bonding

1 answer 86 views

A student measures the current in a galvanic cell with a standard potential of 1.10 V, using a Zinc electrode and a Copper electrode. The student recorded the current as 0.50 A. What is the rate of the electrochemical reaction occurring in the cell?

answered Jan 22 in ElectroChemistry

1 answer 45 views

Determine the oxidation state of the transition metal in potassium manganate (VII) and explain how you arrived at your answer.

answered Jan 21 in Inorganic Chemistry

1 answer 32 views

When did community psychology emerge?

answered Jan 17 in Psychology

1 answer 64 views

When evaluating the task-based model of grief, what weakness can be pointed out?

asked Jan 15 in Psychology

1 answer 31 views

What are night terrors?

asked Jan 13 in Psychology

1 answer 14 views

Which members of the food chain break down remains of plants and other organisms when they die?

answered Jan 8 in Science

1 answer 77 views

When the hemoglobin loses its oxygen, it changes to what color?

answered Jan 8 in Science

1 answer 12 views

Like other bryophytes, moss plants spend most of their life cycle as?

asked Dec 31, 2024 in Science

1 answer 36 views

In the water molecule, two of the electron pairs are lone pairs rather than what?

answered Dec 31, 2024 in Science

1 answer 37 views

If you find dna floating in a cell's cytoplasm, what kind of organism is it?

answered Dec 30, 2024 in Science

1 answer 12 views

Bacteria are what kind of cell?

answered Dec 30, 2024 in Science

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