Recent activity by MahaliaSchul

1 answer 36 views

Calculate the standard enthalpy change (∆H°) for the dissolution of 5.00 g of solid NaOH in 100.0 mL of water, given that the temperature of the solution increased from 25.0°C to 27.5°C. The density of the solution is 1.00 g/mL and the specific heat capacity of the solution is 4.18 J/(g°C). The molar mass of NaOH is 40.00 g/mol.

asked 2 days ago in Chemical thermodynamics

1 answer 52 views

What is the elemental composition in a soil sample collected from a farm field that has been subjected to excessive use of synthetic fertilizers for the past five years? Use the information obtained from the elemental analysis to suggest alternative fertilization techniques that would improve soil health and preserve long-term fertility.

asked 5 days ago in Analytical Chemistry

1 answer 59 views

Calculate the enthalpy change for the dissolution of 10.0 grams of sodium chloride (NaCl) in 100 mL of water at 25°C. The density of water is 1.00 g/mL and the heat capacity of the solution is 4.18 J/g°C. The molar mass of NaCl is 58.44 g/mol and its enthalpy of dissolution is -3.9 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 67 views

What is the balanced equation for the oxidation of ethanol to acetic acid, and what is the reducing agent in this reaction?

answered Jan 21 in Organic Chemistry

1 answer 60 views

Identify the IUPAC name of the organic compound with the molecular formula C3H8O.

answered Jan 21 in Organic Chemistry

1 answer 43 views

When might PTSD symptoms initially appear?

asked Jan 20 in Psychology

1 answer 34 views

Why do biological psychologists focus on the role of the brain and genetic factors in behaviour?

answered Jan 17 in Psychology

1 answer 7 views

Please evaluate the General Adaptation Syndrome theory.

answered Jan 16 in Psychology

1 answer 45 views

According to schema theory, what is a schema?

asked Jan 16 in Psychology

1 answer 7 views

According to Bandura, how does observational learning influence behaviour?

answered Jan 15 in Psychology

1 answer 41 views

What is the purpose of the ego in psychoanalytic theory?

answered Jan 14 in Psychology

1 answer 31 views

What is figure-ground?

answered Jan 14 in Psychology

1 answer 34 views

Which direction does the sun, moon, and stars appear to travel?

asked Jan 8 in Science

1 answer 24 views

What term means the adjusting of systems within a cell in order to restore balance or maintain equilibrium?

asked Jan 8 in Science

1 answer 27 views

What french chemist discovered the radioactive elements polonium and radium?

asked Jan 6 in Science

1 answer 17 views

What did sir isaac newton's famous law help people understand?

answered Jan 6 in Science

1 answer 22 views

The way of learning that involves reward and punishment is called?

asked Jan 2 in Science

1 answer 25 views

The epochs of the universe are known back to very shortly after what 'explosive' event?

asked Jan 2 in Science

1 answer 21 views

Metalloids, metals, and nonmetals are all classes of what?

answered Dec 31, 2024 in Science

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