Questions by SelmaHartsoc

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1 answer 23 views

What is the relationship between the electronic structure and magnetic properties of a molecular magnet, and how can we predict these properties using quantum chemistry methods?

asked Feb 24 in Quantum Chemistry

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1 answer 32 views

What is the minimum concentration of reactants required for a chemical reaction to proceed safely and efficiently?

asked Feb 20 in Chemical kinetics

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1 answer 43 views

How can we synthesize the molecule 4-ethyl-2-methylhexane using retrosynthetic analysis? Show the steps involved in the retrosynthesis and propose a viable synthetic pathway.

asked Feb 14 in Organic Chemistry

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1 answer 55 views

How does inadequate training for chemistry teachers affect the quality of students' education and their understanding of chemical concepts? Provide specific examples or case studies to support your argument.

asked Feb 13 in Chemical education

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1 answer 44 views

How can chemistry students effectively learn and understand complex chemical concepts and theories without access to hands-on experimentation due to limited laboratory opportunities?

asked Feb 4 in Chemical education

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1 answer 35 views

Design a novel biodegradable polymer and investigate its synthesis using sustainable and green chemistry practices.

asked Feb 4 in Polymer Chemistry

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1 answer 63 views

Calculate the heat of formation (∆Hf) of water (H2O) given the following reactions and their respective heats of reaction (∆Hr):2H2(g) + O2(g) → 2H2O(g); ∆Hr = -484 kJ/mol ½ O2(g) + H2(g) → H2O(l); ∆Hr = -285.8 kJ/mol Note: The heat of formation is the amount of heat released or absorbed when one mole of a compound is formed from its elements in their standard states.

asked Jan 23 in Chemical bonding

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1 answer 72 views

Calculate the enthalpy change in kJ/mol for the combustion of butane (C4H10) given that the heat of formation of CO2(g) is -393.5 kJ/mol, the heat of formation of H2O(l) is -285.8 kJ/mol, and the heat of formation of C4H10(g) is -126 kJ/mol. The balanced equation for the combustion of butane is:2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(l) + heat.

asked Jan 23 in ThermoChemistry

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1 answer 111 views

A chemistry student needs to calculate the standard enthalpy change for the combustion reaction of methane gas (CH4) at 298 K and 1 atm pressure. The equation for the reaction is:CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l)Given the following standard enthalpies of formation at 298 K:ΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/molΔHf(CH4) = -74.8 kJ/molCalculate ΔHrxn, the standard enthalpy change for the combustion reaction of methane gas.

asked Jan 22 in Chemical thermodynamics

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1 answer 104 views

What is intelligence theory?

asked Jan 17 in Psychology

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1 answer 36 views

What is the impact of child temperament on parenting?

asked Jan 17 in Psychology

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1 answer 47 views

What is the strengths of the psychodynamic approach?

asked Jan 16 in Psychology

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1 answer 55 views

How do we assess the relevance and applicability of psychodynamic theories to different contexts?

asked Jan 16 in Psychology

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1 answer 66 views

Who is associated with the psychosocial theory?

asked Jan 16 in Psychology

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1 answer 44 views

How do cognitive distortions relate to personality?

asked Jan 15 in Psychology

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1 answer 33 views

What is the aim of historical research?

asked Jan 14 in Psychology

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1 answer 78 views

What are some key factors that influence group dynamics?

asked Jan 14 in Psychology

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1 answer 36 views

What is the difference between statistical significance and practical significance?

asked Jan 14 in Psychology

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1 answer 52 views

What is the definition of 'self-efficacy'?

asked Jan 13 in Psychology

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1 answer 33 views

When na 2 hpo 24 − (the weak acid) comes into contact with a strong base, such as sodium hydroxide (naoh), the weak acid reverts back to the weak base and produces what?

asked Jan 8 in Science

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