Recent activity by LucieEdments

1 answer 31 views

How can crystallography and knowledge of crystal structures be used to determine the purity of a particular substance?

asked 5 days ago in Physical Chemistry

1 answer 22 views

How can benzyl chloride and ammonia be reacted to synthesize phenylalanine, and what are the specific conditions (such as temperature and pressure) required for this reaction to occur?

answered 6 days ago in Chemical synthesis

1 answer 49 views

Given the following equilibrium reaction: Fe3+(aq) + 4CN-(aq) <--> Fe(CN)64-(aq)If the equilibrium constant, Kc, is equal to 1.2 x 10^10 at 25°C, what will be the value of Kc at 50°C? And how will the equilibrium position shift when the temperature is changed from 25°C to 50°C?

answered 6 days ago in Chemical equilibrium

1 answer 44 views

Calculate the standard enthalpy change for the combustion of methane gas using the following reaction: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g). Given the standard enthalpy of formation values for methane, carbon dioxide, and water, calculate the heat released or absorbed during this reaction. Express your answer in kJ/mol.

answered Feb 3 in Chemical thermodynamics

1 answer 49 views

How can polarography be used to accurately determine the concentration of a metal ion in a given sample and what are the factors that may affect the accuracy of the analysis?

asked Jan 29 in Analytical Chemistry

1 answer 59 views

Calculate the bond dissociation energy of a molecule of hydrogen (H₂) given that the bond length is 74 pm and the energy required to break the bond is 436 kJ/mol.

answered Jan 23 in Chemical bonding

1 answer 52 views

Who is known for the ecological systems theory of development?

asked Jan 20 in Psychology

1 answer 35 views

Who proposed the 'Social Identity Theory'?

answered Jan 15 in Psychology

1 answer 30 views

Who is a prominent figure in neuropsychological research on prosopagnosia?

answered Jan 15 in Psychology

1 answer 27 views

When did the evolutionary approach become popular in psychology?

asked Jan 15 in Psychology

1 answer 36 views

What has a bigger impact on water quality, natural events or human activity?

asked Jan 6 in Science

1 answer 24 views

Resistors connected end to end are said to be in what?

answered Dec 31, 2024 in Science

1 answer 11 views

In which continent are meerkats most likely to be found?

asked Dec 31, 2024 in Science

1 answer 42 views

Changing the frequency of sound waves, will change the _________ of the sound of a musical instrument?

answered Dec 30, 2024 in Science

1 answer 31 views

What makes monotremes different than other mammals?

asked Dec 27, 2024 in Science

1 answer 51 views

How many pairs of autosomes are there?

asked Dec 27, 2024 in Science

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