Questions by MarilouArnde

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1 answer 32 views

Calculate the standard enthalpy change for the reaction between 2.00 moles of liquid ethanol (C2H5OH) and 3.50 moles of gaseous oxygen (O2) to form carbon dioxide (CO2) gas and liquid water (H2O) at 25°C and standard pressure. The balanced chemical equation for the reaction is C2H5OH + 3O2 → 2CO2 + 3H2O. (The molar enthalpies of formation for C2H5OH, CO2, and H2O are -277.6 kJ/mol, -393.5 kJ/mol, and -285.8 kJ/mol, respectively.)

asked 2 days ago in Chemical thermodynamics

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1 answer 17 views

Calculate the reaction quotient Q for the chemical reaction below using the given concentrations of reactants and products at a temperature of 25°C:2H2(g) + O2(g) -> 2H2O(g)[H2] = 0.10 M, [O2] = 0.05 M, [H2O] = 0.08 M.

asked 2 days ago in Chemical thermodynamics

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1 answer 35 views

What is the calculated vibrational frequency of the carbon-oxygen double bond in the molecule ethylene oxide, and how does this frequency compare to the corresponding frequency for a single carbon-oxygen bond? Use quantum chemical calculations to determine the infrared spectra for both bonds, and explain the differences in the spectra.

asked 5 days ago in Quantum Chemistry

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1 answer 4 views

According to the cognitive-behavioural model, what is the cause of obsessive-compulsive disorder OCD ?

asked Jan 16 in Psychology

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1 answer 25 views

What is psychosocial development?

asked Jan 14 in Psychology

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1 answer 21 views

What is the difference between a cross-sectional and a longitudinal study?

asked Jan 13 in Psychology

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1 answer 56 views

Which part of the brain regulates the rate of breathing?

asked Jan 8 in Science

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1 answer 26 views

What occurs at joints?

asked Jan 7 in Science

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1 answer 20 views

What kind of family is haumea part of?

asked Jan 7 in Science

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1 answer 38 views

What device changes kinetic energy to electrical energy through electromagnetic induction?

asked Jan 6 in Science

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1 answer 36 views

Vaccination is the process of exposing a person to pathogens on purpose so the person will develop what?

asked Jan 2 in Science

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1 answer 9 views

Sex-linked traits are located on genes on what chromosomes?

asked Dec 31, 2024 in Science

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1 answer 25 views

Light has the properties of both a wave and what else?

asked Dec 31, 2024 in Science

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1 answer 19 views

What is the main component of phytoplankton?

asked Dec 30, 2024 in Science

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