Recent activity by DerrickLavin

1 answer 36 views

How can chemistry teachers incorporate more safety protocols in their lab instructions to ensure students are fully aware of potential hazards and know how to properly handle chemicals and equipment?

answered 16 hours ago in Chemical education

1 answer 4 views

Consider the reaction: 2H2(g) + O2(g) → 2H2O(g) ΔH= −483.6 kJ/molAt constant temperature and pressure, 4 moles of hydrogen and 2 moles of oxygen are allowed to react. What is the maximum amount of work that can be obtained from this reaction?

asked 2 days ago in Physical Chemistry

1 answer 13 views

Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol

asked 2 days ago in Chemical thermodynamics

1 answer 50 views

How does a change in concentration of reactants affect the rate of reaction and the safety in the production of hydrogen gas?

answered 6 days ago in Chemical kinetics

1 answer 41 views

Calculate the corrosion rate of a 5mm thick copper wire that is exposed to a saline solution of 20% NaCl at a temperature of 25°C, knowing that the wire has lost 3 grams of mass in 10 days of exposure.

answered Jan 23 in ElectroChemistry

1 answer 46 views

Who proposed the PERMAL model?

answered Jan 20 in Psychology

1 answer 26 views

According to the social identity theory, what is the basis of group formation?

asked Jan 17 in Psychology

1 answer 25 views

How does the psychodynamic theory explain personality?

asked Jan 17 in Psychology

1 answer 55 views

What is the cognitive-behavioural model?

asked Jan 13 in Psychology

1 answer 26 views

What is the theory of planned behaviour?

answered Jan 13 in Psychology

1 answer 73 views

What is Viktor Frankl's approach to psychotherapy?

asked Jan 10 in Psychology

1 answer 19 views

Which type of animal creates useful substances such as honey, wax, lacquer, and silk?

asked Jan 8 in Science

1 answer 10 views

What structure connects the fetus to the placenta, allowing the exchange of gases?

asked Jan 7 in Science

1 answer 23 views

What role do proteins play in a biological reaction?

asked Jan 7 in Science

1 answer 26 views

The three main rock types are igneous, metamorphic, and what?

asked Jan 2 in Science

1 answer 18 views

Asci are used by mycelia for what kind of reproduction?

answered Dec 30, 2024 in Science

1 answer 41 views

Almost all vascular plants have mycorrhizae and rely on their fungal partners for what?

asked Dec 27, 2024 in Science

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