Questions by Karine04K24

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1 answer 12 views

What is the effect of concentration and duration of exposure of a photosensitizer on the rate of photochemical reactions?

asked 3 days ago in PhotoChemistry

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1 answer 6 views

What is the effect of changing the concentration of reactants on the rate of the iodine clock reaction between potassium iodide and hydrogen peroxide?

asked 5 days ago in Chemical kinetics

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1 answer 18 views

How does the variation in the reaction rate affect the equilibrium constant for a given chemical reaction?

asked 5 days ago in Chemical kinetics

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1 answer 29 views

What is the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid, and how can this relationship be quantified using the Arrhenius equation?

asked 6 days ago in Chemical kinetics

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1 answer 20 views

How does the addition of nanoparticles to a polymer matrix affect the thermal and mechanical properties of the resulting nanocomposite material?

asked Feb 17 in Polymer Chemistry

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1 answer 30 views

How can we optimize the synthesis reaction conditions, such as temperature and pressure, to enhance the crystal growth of metal-organic frameworks (MOFs) for more efficient gas separation?

asked Feb 14 in Materials Chemistry

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1 answer 33 views

In the coordination compound [Co(en)2Cl2]Cl, identify the types of isomerism present and draw the structures of each isomer.

asked Feb 13 in Coordination Chemistry

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1 answer 33 views

How can the photochemical properties of luminescent materials be optimized to enhance their efficiency in light-emitting devices?

asked Feb 10 in PhotoChemistry

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1 answer 43 views

How can the mechanical and thermal properties of polymer-based materials for 3D printing be optimized for specific applications?

asked Feb 10 in Polymer Chemistry

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1 answer 31 views

How can the chemical structure of existing cardiovascular drugs be modified to improve their efficacy and reduce their side effects?

asked Feb 6 in Medicinal Chemistry

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1 answer 53 views

Design a heat exchanger for a chemical process that involves cooling 1000 kg of a liquid from 80°C to 40°C using water as the cooling fluid. The process flow rate is 5 kg/min and the maximum allowable pressure drop in the heat exchanger is 5 kPa. Assume a heat transfer coefficient of 1000 W/m²K for the liquid and 5000 W/m²K for the water. Design the heat exchanger to occupy a maximum area of 20 m². What is the surface area of the heat exchanger required and what would be the optimal flow configuration?

asked Feb 4 in Chemical engineering

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1 answer 40 views

Calculate the standard enthalpy change for the following reaction at 298 K using the standard enthalpies of formation:2SO2(g) + O2(g) → 2SO3(g)

asked Feb 3 in Chemical thermodynamics

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1 answer 78 views

What are the common misconceptions or difficulties that students face when trying to understand the placement of elements on the periodic table and how can these be overcome?

asked Jan 30 in Chemical education

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1 answer 14 views

Where does the term 'existential vacuum' come from?

asked Jan 20 in Psychology

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1 answer 66 views

Why is it important to recognise when you've crossed someone's boundaries?

asked Jan 20 in Psychology

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1 answer 33 views

How does privilege contribute to social erasure?

asked Jan 20 in Psychology

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1 answer 45 views

Why might mindfulness be useful in anxiety treatment?

asked Jan 20 in Psychology

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1 answer 37 views

When seeking to understand the experiences of individuals in a community, what is the term for interviewing people from a variety of backgrounds?

asked Jan 17 in Psychology

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1 answer 39 views

What is the phonemic restoration effect?

asked Jan 16 in Psychology

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1 answer 32 views

What are the strengths of PCT?

asked Jan 16 in Psychology

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