Recent activity by KarinGallego

1 answer 22 views

How can chemistry students without access to a laboratory and equipment still perform experiments and gain relevant hands-on experience in their studies?

asked 17 hours ago in Chemical education

1 answer 42 views

Design a distillation column to separate a mixture of ethanol and water when the initial mixture contains 30% ethanol and 70% water. The desired final concentration of ethanol in the distilled product is 95%. The distillation column is 14 trays high and the reflux ratio is set at 2.2. Calculate the minimum number of theoretical trays required in the distillation column and provide the final composition of the ehtanol product stream.

asked 1 day ago in Chemical engineering

1 answer 50 views

What is the mechanism of the reaction between ethanol and HBr? Draw the complete mechanism, including any intermediates formed during the process. Be sure to explain the key steps involved in the reaction and the overall reaction mechanism.

answered 5 days ago in Organic Chemistry

1 answer 44 views

How can potentiometry be used to determine the concentration of chloride ions in a water sample?

asked Jan 29 in Analytical Chemistry

1 answer 36 views

Calculate the enthalpy change for the reaction: 2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g) given the enthalpies of formation of H2O(g), SO2(g), and H2S(g) are -241.8 kJ/mol, -296.8 kJ/mol, and -20.2 kJ/mol, respectively.

answered Jan 23 in ThermoChemistry

1 answer 47 views

When was the Monty Hall problem introduced?

asked Jan 20 in Psychology

1 answer 22 views

Please compare reliability and validity in psychological measurement.

asked Jan 20 in Psychology

1 answer 17 views

According to the psychodynamic theory, what is the difference between neurotic and moral anxiety?

answered Jan 17 in Psychology

1 answer 20 views

What is the Coefficient of Determination (R-squared)?

answered Jan 16 in Psychology

1 answer 31 views

What is panic disorder?

asked Jan 14 in Psychology

1 answer 38 views

Who is called the father of genetics?

asked Jan 8 in Science

1 answer 22 views

What type of environment is maintained in homeostasis?

asked Jan 8 in Science

1 answer 24 views

What is the first part of the large intestine, where wastes enter from the small intestine?

answered Jan 7 in Science

1 answer 24 views

What is one of the most common biochemical compounds on earth and is found in all plants?

asked Jan 6 in Science

1 answer 25 views

What is indicated by the ratio of the output force to the input force in a machine?

asked Jan 6 in Science

1 answer 21 views

What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts?

answered Jan 6 in Science

1 answer 23 views

Protozoa can be classified on the basis of how they?

asked Dec 31, 2024 in Science

1 answer 23 views

Plant-like protists are autotrophs, meaning they make their own what?

answered Dec 31, 2024 in Science

1 answer 8 views

Light reactions occur during which stage of photosynthesis?

answered Dec 31, 2024 in Science

1 answer 27 views

Do placental mammals give birth to relatively small or large fetuses?

answered Dec 30, 2024 in Science

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