Recent activity by ZandraClemmo

1 answer 26 views

Design a process for the purification of crude caffeine extracted from coffee beans, using available techniques and equipment at your disposal, while ensuring high purity and minimum loss of product.

asked 1 day ago in Chemical engineering

1 answer 50 views

What is the predicted reactivity trend of alkaline earth metals and halogens based on their electronic configurations?

answered 5 days ago in Inorganic Chemistry

1 answer 65 views

Identify the unknown compound X using mass spectrometry. The compound has a molecular formula of C8H10O2 and a mass spectrum with a molecular ion peak at m/z 150 and base peak at m/z 77. Provide the structural formula of the compound and explain the fragmentation pattern observed in the mass spectrum.

asked 6 days ago in Analytical Chemistry

1 answer 8 views

Calculate the melting point of aluminum oxide (Al2O3) given that its enthalpy of fusion is 326 kJ/mol and its entropy of fusion is 110 J/(mol*K). Assume standard pressure and temperature conditions (STP).

answered Jan 23 in Inorganic Chemistry

1 answer 26 views

When might social loafing occur?

answered Jan 20 in Psychology

1 answer 37 views

What is the terror management theory's role in prejudice?

asked Jan 16 in Psychology

1 answer 25 views

What is the transtheoretical model of behaviour change?

answered Jan 14 in Psychology

1 answer 31 views

What is the Law of Prägnanz?

asked Jan 14 in Psychology

1 answer 17 views

What is the cognitive miser theory?

asked Jan 14 in Psychology

1 answer 37 views

What type of radio waves exist in the 540 to 1600 khz frequency range?

asked Jan 8 in Science

1 answer 23 views

What part of the body does hepatitis b effect?

answered Jan 7 in Science

1 answer 16 views

What is the term for the blockage of an artery by the buildup of fatty plaques?

answered Jan 7 in Science

1 answer 37 views

What is the term for abnormally low blood levels of carbon dioxide?

asked Jan 7 in Science

1 answer 19 views

What is the study of matter and the changes that material substances undergo.

answered Jan 7 in Science

1 answer 23 views

What class of animals have four limbs and produce amniotic eggs?

answered Jan 6 in Science

1 answer 43 views

Lava erupts through long cracks in the ground, also called what?

asked Dec 31, 2024 in Science

1 answer 43 views

Hypertension, or high blood pressure, can increase the risk of what?

asked Dec 30, 2024 in Science

1 answer 10 views

What occurs before the endometrium thickens in estrous cycles?

asked Dec 27, 2024 in Science

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