Recent activity by SusannaPartr

1 answer 41 views

How do the electronic properties of a metallic nanoparticle change as its size decreases from bulk to the nanoscale, and how does this affect its optical properties, such as its absorption and scattering of light?

answered Jan 31 in Quantum Chemistry

1 answer 65 views

What is the composition and crystal structure of a mineral sample using X-ray diffraction analysis?

asked Jan 30 in Analytical Chemistry

1 answer 51 views

How can the presence of a specific organic compound be identified in a mixture using Raman spectroscopy?

asked Jan 29 in Analytical Chemistry

1 answer 41 views

Calculate the heat of adsorption of hydrogen gas on a platinum surface given the initial temperature of the system is 298 K and the final temperature is 330 K. The mass of the platinum surface used is 5 grams, and the amount of hydrogen adsorbed is 0.01 moles. Assume the heat capacity of the system is constant at 25 J/K.

answered Jan 23 in ThermoChemistry

1 answer 57 views

Calculate the heat capacity of 10 grams of water at 25°C if it requires 500 joules of heat to raise its temperature by 5°C.

answered Jan 23 in Chemical thermodynamics

1 answer 45 views

Calculate the amount of heat absorbed or released when 20 grams of dry ice (solid carbon dioxide) is converted to gaseous carbon dioxide at -78.5°C and atmospheric pressure, given the heat of sublimation of dry ice is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 20 views

Who proposed the triarchic theory of intelligence?

asked Jan 20 in Psychology

1 answer 24 views

How can research in indigenous psychology be ethically conducted?

asked Jan 20 in Psychology

1 answer 23 views

According to the ecological theory of perception, what is perception based on?

asked Jan 20 in Psychology

1 answer 9 views

When is a correlation analysis used in psychology research?

asked Jan 17 in Psychology

1 answer 27 views

What is the problem with the Diathesis-Stress model?

asked Jan 16 in Psychology

1 answer 52 views

According to the Resource Model of Attention, what is the relationship between attention and task demands?

answered Jan 15 in Psychology

1 answer 58 views

What is the difference between behaviourism and cognitive psychology?

asked Jan 14 in Psychology

1 answer 57 views

Squamata is the largest order of what broad animal group, and includes lizards and snakes?

asked Dec 31, 2024 in Science

1 answer 10 views

What part of the continuous dermal tissue system covers stems?

asked Dec 27, 2024 in Science

1 answer 52 views

What is a measure of how hot or cold the air is?

answered Dec 27, 2024 in Science

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