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Determine the standard enthalpy change for the dissolution of 5.00 grams of magnesium chloride in water, given that the molar mass of MgCl2 is 95.21 g/mol and the standard enthalpy change of formation for magnesium chloride is -641.3 kJ/mol.

answered 1 day ago in Chemical thermodynamics

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Calculate the enthalpy of adsorption of hydrogen gas on activated carbon if 2 grams of activated carbon absorb 0.025 moles of hydrogen gas at 298 K and the pressure of the system is 1 atm. The molar enthalpy of hydrogen gas is -285.8 kJ/mol at constant pressure.

answered Jan 23 in ThermoChemistry

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A chemistry student wants to know how the concentration of reactants and products affects the equilibrium constant of a chemical reaction. They decide to investigate the reaction between nitrogen gas and oxygen gas to form nitrogen dioxide gas, and the equilibrium constant Kc for this reaction. What is the relationship between the concentration of reactants and products and the equilibrium constant for this reaction, and how can this be explained by Le Chatelier's principle?

asked Jan 22 in Physical Chemistry

1 answer 48 views

How did the Milgram experiment test obedience?

answered Jan 20 in Psychology

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According to the social identity theory, what is the role of self-categorisation in intergroup behaviour?

answered Jan 20 in Psychology

1 answer 25 views

What is the frequency of sound?

answered Jan 14 in Psychology

1 answer 18 views

Which type of glaciers form several unique features through erosion, including cirques, arêtes, and horns?

asked Jan 8 in Science

1 answer 40 views

What simple machine works with a wheel and axle in a wheelbarrow?

asked Jan 7 in Science

1 answer 25 views

Living organisms are made up of what type of carbon-based compounds?

answered Dec 31, 2024 in Science

1 answer 22 views

What is the complex network of nervous tissue that carries electrical messages throughout the body?

asked Dec 28, 2024 in Science

1 answer 30 views

Diffusion is an effective transport mechanism over the spatial scales typically found at what level?

asked Dec 27, 2024 in Science

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