Questions by SOSMarilyn83

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1 answer 26 views

How can chemistry education be improved to help students understand the crucial role of chemistry in the development of society and the economy, and how practical and theoretical applications of chemistry are interconnected?

asked 23 hours ago in Chemical education

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1 answer 83 views

What is the concentration of iron (Fe) present in a given water sample using colorimetry as the analytical method, given that the absorbance at a wavelength of 565 nm is 0.423 and the molar absorptivity of the Fe-phenanthroline complex is 11,100 M^-1 cm^-1?

asked 6 days ago in Analytical Chemistry

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1 answer 67 views

A chemistry student needs to determine the conditions at which a pure substance will change from solid to liquid phase. The substance in question has a melting point of 120 °C and a heat of fusion of 35 kJ/mol. How much heat is required to melt 100 grams of the substance at its melting point? And, what is the temperature at which the substance will start to solidify if the ambient pressure is 1 atm and the substance has cooled from its liquid phase at 150 °C to its solid phase?

asked Jan 22 in Physical Chemistry

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1 answer 56 views

Why is the Biological theory important to psychology?

asked Jan 20 in Psychology

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1 answer 22 views

What is a criticism of the feminist perspective?

asked Jan 16 in Psychology

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1 answer 5 views

According to Gardner's theory of multiple intelligences, what are the eight types of intelligences?

asked Jan 15 in Psychology

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1 answer 19 views

Who developed the Speech Act theory?

asked Jan 15 in Psychology

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1 answer 15 views

What is perspective-taking?

asked Jan 13 in Psychology

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1 answer 36 views

Who is Jean Piaget?

asked Jan 13 in Psychology

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1 answer 16 views

What usually causes fractures on a bone?

asked Jan 8 in Science

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1 answer 7 views

What do you call an abnormal mass formed when cells divide uncontrollably?

asked Jan 6 in Science

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1 answer 22 views

Ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean are called what?

asked Dec 31, 2024 in Science

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1 answer 21 views

How do amphibians reproduce?

asked Dec 30, 2024 in Science

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1 answer 37 views

Amides are carbonyls attached to one nitrogen atom and one carbon or which other atom?

asked Dec 30, 2024 in Science

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1 answer 28 views

Cells like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its dna is surrounded by a membrane), and has other membrane-bound organelles that allow for what?

asked Dec 27, 2024 in Science

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