Recent activity by SOSMarilyn83

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

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

1 answer 55 views

How does the detection limit of X-ray fluorescence spectroscopy change with varying concentrations of the element of interest in a sample?

answered 6 days ago in Analytical Chemistry

1 answer 41 views

How can we analyze the composition of a mixed sample of amino acids using liquid chromatography?

answered Jan 29 in Analytical Chemistry

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

1 answer 33 views

What is the major product formed when 1-bromo-2-methylcyclohexane is treated with sodium ethoxide in ethanol at a temperature of 60°C?

answered Jan 21 in Organic Chemistry

1 answer 56 views

Why is the Biological theory important to psychology?

asked Jan 20 in Psychology

1 answer 22 views

What is a criticism of the feminist perspective?

asked Jan 16 in Psychology

1 answer 5 views

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

asked Jan 15 in Psychology

1 answer 19 views

Who developed the Speech Act theory?

asked Jan 15 in Psychology

1 answer 33 views

Why do we forget things?

answered Jan 15 in Psychology

1 answer 5 views

What is reflexivity in qualitative research?

answered Jan 15 in Psychology

1 answer 5 views

What is model of attention and processing skills?

answered Jan 14 in Psychology

1 answer 17 views

What is working memory capacity?

answered Jan 14 in Psychology

1 answer 15 views

What is perspective-taking?

asked Jan 13 in Psychology

1 answer 36 views

Who is Jean Piaget?

asked Jan 13 in Psychology

1 answer 16 views

What usually causes fractures on a bone?

asked Jan 8 in Science

1 answer 7 views

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

asked Jan 6 in Science

1 answer 26 views

The sum of the kinetic and potential energies of a system’s atoms and molecules is called what?

answered Jan 2 in Science

1 answer 65 views

The normal respiratory rate per minute in adult humans is?

answered Jan 2 in Science

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