Recent activity by GeorgiaHatfi

1 answer 27 views

Calculate the standard enthalpy change (∆H°) for the formation of ammonia (NH3) at 298 K using the following data: N2(g) + 3H2(g) → 2NH3(g) ∆H° = −92.4 kJ/mol Hint: Standard enthalpy change (∆H°) for a reaction is calculated by taking the sum of the standard enthalpies of the products minus the sum of the standard enthalpies of the reactants.

asked Feb 3 in Chemical thermodynamics

1 answer 61 views

Calculate the heat of formation of methane (CH4) given the enthalpies of formation of H2(g) = 0 kJ/mol and CH3(g) = 120.6 kJ/mol.

answered Jan 23 in Chemical bonding

1 answer 53 views

Calculate the exchange current density at the cathode of a lithium-ion battery if the temperature of the battery is 25 °C, the standard potential of

asked Jan 23 in ElectroChemistry

1 answer 47 views

Calculate the equilibrium constant for a reaction involving a weak oxidizing agent where the concentration of the oxidizing agent is 0.1 M and the concentration of the reduced species is 0.05 M at equilibrium. The balanced chemical equation of the reaction is given as follows:OX + 2 e- ⇌ REDwhere OX is the weak oxidizing agent and RED is the reduced species.

answered Jan 23 in Chemical equilibrium

1 answer 8 views

A student wants to calculate the rate of an electrochemical reaction. They know that the concentration of the anodic reactant is 0.01 M and that the cathodic reactant is at a concentration of 0.02 M. The student also knows that the cell potential is 1.23 V, and that the Faraday's constant is 96485 C/mol. The reaction is:Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s)What is the rate of the reaction in mol/s at standard conditions (25°C and 1 atm)?

asked Jan 22 in ElectroChemistry

1 answer 21 views

What is metacognition?

answered Jan 20 in Psychology

1 answer 24 views

What are some critiques of evolutionary psychology?

asked Jan 16 in Psychology

1 answer 49 views

What are the limitations of elaboration likelihood model?

answered Jan 16 in Psychology

1 answer 68 views

While similar to insects, what eight-legged invertebrates lack antennae or wings?

answered Jan 8 in Science

1 answer 17 views

Which type of tree loses its leaves each fall and remains leafless in the winter?

asked Jan 8 in Science

1 answer 30 views

What type of plant is the dominant group of land plants?

answered Jan 8 in Science

1 answer 22 views

What is the term for plants that produce flowers and fruit?

asked Jan 7 in Science

1 answer 24 views

What is an atom or group of bonded atoms that has a positive or negative charge?

asked Jan 6 in Science

1 answer 29 views

What forms when a glacier scrapes a large hole in the ground?

answered Jan 6 in Science

1 answer 50 views

Water is a versatile solvent that can dissolve many ionic and polar molecular solutes to make what?

answered Jan 2 in Science

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