Recent activity by AlexandraVer

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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.

asked 2 days ago in Chemical engineering

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What is the concentration of fluoride ions present in a sample of drinking water using a fluoride ion-selective electrode?

asked 6 days ago in Analytical Chemistry

1 answer 19 views

What is the relationship between attention and arousal?

asked Jan 17 in Psychology

1 answer 7 views

When evaluating a theory in existential psychology, what is the importance of considering the level of abstraction?

asked Jan 16 in Psychology

0 answers 74 views

When did Aaron Beck develop cognitive therapy?

asked Jan 16 in Psychology

1 answer 26 views

What organ protects the body from injury, water loss, and microorganisms?

answered Jan 7 in Science

1 answer 23 views

What larger theory is einstein's equation part of?

asked Jan 7 in Science

1 answer 59 views

What is the first cell of a new organism?

answered Jan 7 in Science

1 answer 23 views

What is produced when sulfur and oxygen combine?

answered Jan 6 in Science

1 answer 22 views

What catalyst substances may also allow reactions to occur by different pathways that have lower activation energy?

answered Jan 6 in Science

1 answer 49 views

What are proteins made up of?

asked Jan 3 in Science

1 answer 25 views

Veins are blood vessels that carry blood toward what?

answered Jan 2 in Science

1 answer 43 views

Tropomyosin is a type of what, that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin?

answered Jan 2 in Science

1 answer 16 views

The pulmonary circulation carries blood between what two organs?

asked Jan 2 in Science

1 answer 11 views

In 1802, charles and gay-lussac both proposed that for a fixed amount of gas at a constant pressure, what is directly proportional to its absolute temperature?

answered Dec 30, 2024 in Science

1 answer 20 views

About one-fourth of the blood pumped with each heartbeat enters arteries serving what organs of digestion?

answered Dec 30, 2024 in Science

1 answer 19 views

What forces the fetus out of the uterus?

asked Dec 27, 2024 in Science

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