Recent activity by RoxannaQwg41

1 answer 20 views

Determine the Tafel slopes for the oxidation of H2 gas and the reduction of O2 gas using a platinum electrode in a 1 M acidic solution. The measured current densities at the anode and cathode were 0.5 mA/cm² and 0.3 mA/cm², respectively.

answered 1 day ago in ElectroChemistry

1 answer 66 views

What is the effect of adding a catalyst on the equilibrium position of a redox reaction between iron(III) oxide and carbon monoxide, where iron is reduced and carbon is oxidized according to the following equation?Fe2O3 + 3CO ⇆ 2Fe + 3CO2 Calculate the equilibrium constant (Kp) of the reaction at 298 K in the presence and absence of a catalyst. Explain whether or not the presence of the catalyst will affect the position of equilibrium and justify the answer with relevant calculations.

asked 5 days ago in Chemical equilibrium

1 answer 43 views

Calculate the lattice energy of magnesium oxide (MgO) given that the magnesium ion has a charge of +2 and the oxide ion has a charge of -2. The lattice energy can be calculated using the Born-Haber cycle and the following data:- The enthalpy of sublimation of magnesium (Mg) is 147 kJ/mol- The first ionization energy of magnesium is 738 kJ/mol- The enthalpy of formation of MgO is -601 kJ/mol- The electron affinity of oxygen is -141 kJ/mol- The enthalpy of dissociation of oxygen molecules is 498 kJ/mol.

asked Jan 23 in Inorganic Chemistry

1 answer 5 views

Why is random assignment important?

answered Jan 20 in Psychology

1 answer 21 views

Who conducted the study on the mental health of Fly-in-fly-out partners?

asked Jan 17 in Psychology

1 answer 19 views

According to Cognitive Resource Theory, how does a leader make decisions?

answered Jan 17 in Psychology

1 answer 47 views

What factors contribute to resilience?

answered Jan 14 in Psychology

1 answer 16 views

What theory explains the physical behavior of gases?

asked Jan 8 in Science

1 answer 25 views

What is used for cooling detectors of infrared telescopes?

answered Jan 7 in Science

1 answer 16 views

Virtually all of the effects of pregnancy can be attributed in some way to the influence of what?

asked Jan 2 in Science

1 answer 34 views

The human body wants to maintain equilibrium or balance, also known as what?

answered Jan 2 in Science

1 answer 24 views

Reducing the number of molecules in a rigid container causes what to decrease?

asked Dec 31, 2024 in Science

1 answer 23 views

In prokaryotes, what is composed of a single, double-stranded dna molecule in the form of a loop or circle?

asked Dec 31, 2024 in Science

1 answer 34 views

How do dogs lose body heat?

asked Dec 30, 2024 in Science

1 answer 37 views

As the number of unpaired electrons increases, what happens to the magnetic moment?

answered Dec 30, 2024 in Science

1 answer 27 views

What do we call something that pushes or pulls on an object?

answered Dec 27, 2024 in Science

1 answer 8 views

What kind of mutations are produced by nucleotide-pair insertions or deletions?

answered Dec 27, 2024 in Science

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