Recent activity by LeliaRibush

1 answer 8 views

Consider the reaction: 2H2(g) + O2(g) → 2H2O(g) ΔH= −483.6 kJ/molAt constant temperature and pressure, 4 moles of hydrogen and 2 moles of oxygen are allowed to react. What is the maximum amount of work that can be obtained from this reaction?

asked Feb 3 in Physical Chemistry

1 answer 16 views

Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 40 views

Calculate the enthalpy change for the dissolution of 10 grams of sodium hydroxide in excess water, given that the solution formed has a final temperature of 25°C, and the specific heat capacity of the solution is 4.184 J/(g°C). The molar enthalpy of dissolution of NaOH is -44 kJ/mol. Assume that the density of the solution is equal to that of water.

answered Jan 23 in ThermoChemistry

1 answer 34 views

What is the role congruity theory of prejudice?

asked Jan 20 in Psychology

1 answer 25 views

How can the facial feedback theory be used to explain emotions?

asked Jan 16 in Psychology

1 answer 27 views

What are the limitations of the transformational approach to leadership?

asked Jan 16 in Psychology

1 answer 18 views

What is the pre-conventional stage of moral development?

asked Jan 14 in Psychology

1 answer 31 views

According to Erikson, what happens to the teenager in the Adolescence stage?

answered Jan 14 in Psychology

1 answer 32 views

Which layer of the earth is molten?

asked Jan 8 in Science

1 answer 59 views

What is the simplest life cycle?

answered Jan 7 in Science

1 answer 30 views

What forms when oceanic crust subducts into the mantle at convergent plate boundaries?

answered Jan 6 in Science

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