Recent activity by DaniloMichel

1 answer 28 views

Calculate the standard enthalpy change (ΔH°) for the combustion reaction of ethanol (C2H5OH) if the heat evolved is 1367.6 kJ and the molar mass of ethanol is 46.07 g/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 36 views

Calculate the standard enthalpy of formation (\Delta H_{f}^{\circ}) for Carbon dioxide (CO_2) using quantum chemical calculations.

answered 5 days ago in Quantum Chemistry

1 answer 69 views

What is the structure of the molecule responsible for the peak at 1700 cm$^{-1}$ in the IR spectrum of a compound?

answered 5 days ago in Physical Chemistry

1 answer 68 views

Using the melting point determination technique, determine the purity of a sample of aspirin and compare it to the expected melting point range for pure aspirin. Additionally, propose possible sources of error in the experiment and suggest ways to minimize them.

answered 6 days ago in Analytical Chemistry

1 answer 4 views

A researcher is working on the desorption of a specific gas from a metal surface. The enthalpy of desorption for this process is -23.4 kJ/mol. If the researcher desorbs 0.75 moles of the gas, how much heat is released (or absorbed)?

answered Jan 22 in ThermoChemistry

1 answer 73 views

A chemistry student needs to calculate the enthalpy of adsorption of ammonia that is adsorbed on silica gel at a temperature of 298 K. The student is provided with the following information: - The partial pressure of ammonia in the gas phase is 0.5 atm- The initial temperature of the clean silica gel is 298 K- The final temperature of the adsorbed ammonia and silica gel mixture is 306 K- The mass of ammonia adsorbed on silica gel is 0.025 grams What is the enthalpy of adsorption of ammonia on silica gel at 298 K, in kJ/mol?

answered Jan 22 in ThermoChemistry

1 answer 82 views

Determine the oxidation state of the sulfur atom in the compound H2SO4.

answered Jan 21 in Inorganic Chemistry

1 answer 8 views

What are the implications of the information-processing approach to cognitive development for understanding memory?

asked Jan 17 in Psychology

1 answer 30 views

Please compare and contrast the social learning and humanistic approaches to therapy.

answered Jan 15 in Psychology

1 answer 31 views

What is the implication of Group membership?

asked Jan 15 in Psychology

1 answer 22 views

What is biopsychology?

asked Jan 14 in Psychology

1 answer 37 views

What is antisocial personality disorder?

answered Jan 13 in Psychology

1 answer 34 views

What are the advantages of the psychodynamic theory of anxiety?

answered Jan 13 in Psychology

1 answer 51 views

What is the bystander effect?

asked Jan 10 in Psychology

1 answer 7 views

What type of tissue covers the outside of a plant?

answered Jan 8 in Science

1 answer 29 views

What rises through solid rocks where conditions are right?

asked Jan 7 in Science

1 answer 23 views

What form of radiation is the energy emitted by the sun?

answered Jan 6 in Science

1 answer 24 views

The articular cartilage is thickest in the upper and back part of the acetabulum, the socket portion of what?

asked Dec 31, 2024 in Science

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