Recent activity by PeggyStreit

1 answer 16 views

How can chemistry educators effectively advocate for more funding to support quality chemistry education in schools with limited resources?

answered 1 day ago in Chemical education

1 answer 22 views

Determine the type of inorganic solid formed between Mg and O, and explain how you arrived at your conclusion.

asked 1 day ago in Inorganic Chemistry

1 answer 28 views

Determine the equilibrium constant, Kc, for the reaction between iodine and thiosulfate ions in aqueous solution, given the initial concentrations of iodine (0.02 M), thiosulfate (0.05 M), and hydrogen ions (0.1 M). The reaction is as follows:I2(aq) + 2S2O3^2-(aq) + 2H+(aq) ⇌ 2I^-(aq) + S4O6^2-(aq) Assume that the reaction takes place at 25°C and that the reaction quotient Qc has a value of 0.04 at equilibrium.

answered 1 day ago in Chemical equilibrium

1 answer 41 views

Design a chemical reactor to produce 500 kg of ethylene oxide per hour from ethylene and oxygen gases. Assume the reaction occurs isothermally, and the reactor operates at 3 atm and 250°C. The conversion of ethylene to ethylene oxide is 90%, and the selectivity of ethylene oxide is 97%. You can use either a plug-flow reactor or a continuous stirred-tank reactor. Determine the volume and dimensions of the reactor, and also its cost, assuming a stainless steel construction.

answered 2 days ago in Chemical engineering

1 answer 41 views

Calculate the bond order and bond length of the nitric oxide molecule (NO).

answered Jan 23 in Inorganic Chemistry

1 answer 19 views

What is the modular view of the brain, and how does it explain function?

asked Jan 20 in Psychology

1 answer 22 views

How can Positive Psychology contribute to end-of-life care?

asked Jan 20 in Psychology

1 answer 7 views

Why is it important to consider a client's attachment style in therapy?

answered Jan 17 in Psychology

1 answer 5 views

What is the significance of time in the grieving process?

answered Jan 14 in Psychology

1 answer 28 views

When leaves wilt, what plant process ceases?

asked Jan 8 in Science

1 answer 15 views

What kind of climates are found at or near the equator?

answered Jan 7 in Science

1 answer 7 views

What has high surface tension because of extensive hydrogen bonding?

answered Jan 6 in Science

1 answer 18 views

What do puffer fish produce to protect itself?

answered Jan 6 in Science

1 answer 32 views

Photoautotrophs including (a) plants, (b) algae, and (c) cyanobacteria synthesize their organic compounds via photosynthesis using sunlight as this?

answered Dec 31, 2024 in Science

1 answer 53 views

Monatomic ions have an oxidation number equal to their what?

answered Dec 31, 2024 in Science

1 answer 55 views

In what part of the body do escherichia coli bacteria live?

asked Dec 31, 2024 in Science

1 answer 28 views

Energy from the sun has a wide range of wavelengths.what is the total range of energy called?

answered Dec 30, 2024 in Science

1 answer 25 views

A homogeneous mixture with tiny particles in it is known as what?

asked Dec 28, 2024 in Science

1 answer 56 views

What organ participates in all digestive activities except ingestion and defecation?

answered Dec 27, 2024 in Science

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