Recent activity by DonnellDewee

1 answer 26 views

How can Fourier-transform infrared spectroscopy (FTIR) be used to characterize the chemical structure of polymers? Provide an example of a specific polymer and discuss the relevant spectral features that would be observed in an FTIR spectrum.

answered 12 hours ago in Polymer Chemistry

1 answer 27 views

Calculate the standard enthalpy change for the dissolution of 3.00 moles of sodium chloride in water, given that the molar enthalpy of solution of sodium chloride is -3.88 kJ/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 51 views

What is the difference between carbohydrates and lipids in terms of their chemical structure and functional roles in living organisms?

answered 5 days ago in Organic Chemistry

1 answer 71 views

Investigate the concentrations of copper ions in a given sample of drinking water using voltammetry and determine the accuracy of the measurement technique by comparing it with other analytical methods.

asked 6 days ago in Analytical Chemistry

1 answer 42 views

Calculate the enthalpy change for dissolving 10 grams of potassium chloride (KCl) in 200 mL of water, assuming the temperature remains constant at 25°C. The molar mass of KCl is 74.5513 g/mol and the specific heat capacity of water is 4.184 J/g·°C.

answered Jan 23 in ThermoChemistry

1 answer 10 views

According to cognitive dissonance theory, what is the role of justification in reducing dissonance?

asked Jan 20 in Psychology

0 answers 10 views

When was the Theory of Cognitive Dissonance developed?

asked Jan 17 in Psychology

1 answer 21 views

What are the three stages of GAS?

answered Jan 16 in Psychology

1 answer 16 views

How can the principles of the cognitive-behavioural approach be applied in practice?

asked Jan 15 in Psychology

1 answer 46 views

What is the impact of culture on nonverbal communication?

asked Jan 14 in Psychology

1 answer 18 views

What is cultural humility?

asked Jan 14 in Psychology

1 answer 5 views

What is the difference between correlational and experimental research?

answered Jan 13 in Psychology

1 answer 15 views

What is the difference between essentialism and social constructivism?

asked Jan 13 in Psychology

1 answer 18 views

What is the term for the fast-moving air currents high in the troposphere?

answered Jan 7 in Science

1 answer 39 views

What harmful light does ozone reduce in the upper atmospheres?

answered Jan 6 in Science

1 answer 21 views

What celestial events are the source of elements heavier than iron?

asked Jan 6 in Science

1 answer 34 views

Enthalpy changes are measured by using what?

answered Dec 30, 2024 in Science

1 answer 31 views

A wildfire clears a forest of vegetation and animal life, returning their nutrients to the ground leaving a foundation for rapid recolonization. what is this a classic example of?

asked Dec 30, 2024 in Science

1 answer 9 views

The posterior pituitary is an extension of what anatomical structure?

answered Dec 27, 2024 in Science

1 answer 29 views

Through which process does water from the oceans enter the atmosphere?

asked Dec 27, 2024 in Science

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