Questions by CarmaC633252

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1 answer 31 views

What is the effect of temperature on the solubility of a solid in a liquid solvent? Provide an experimental method to determine this relationship for a given solute-solvent system.

asked Feb 20 in Physical Chemistry

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1 answer 55 views

How does inadequate training of chemistry teachers affect student understanding and performance in chemistry courses?

asked Feb 13 in Chemical education

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1 answer 56 views

What are the consequences of inadequate emphasis on chemical reactions and equations in high school chemistry education? Provide specific examples of how this affects a student's understanding and application of chemistry concepts.

asked Feb 13 in Chemical education

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1 answer 34 views

How can we design an efficient system for the recovery of valuable metals such as gold, silver, and copper from electronic waste, while minimizing the amount of hazardous waste generated in the process?

asked Feb 12 in Chemical engineering

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1 answer 67 views

How can the release rate of drugs from polymer-based drug delivery systems be controlled and optimized for maximum therapeutic efficacy and minimal side effects?

asked Feb 10 in Polymer Chemistry

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1 answer 110 views

How can the properties of polymer-based sensors be optimized to detect specific molecules in environmental monitoring applications?

asked Feb 10 in Polymer Chemistry

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1 answer 62 views

What is the effect of changing the concentration of reactants on the reaction rate and sustainability of a chemical reaction?

asked Feb 3 in Chemical kinetics

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1 answer 56 views

How can we analyze the composition of a given sample using high-performance liquid chromatography (HPLC) and obtain accurate data for the identification and quantification of its components?

asked Jan 29 in Analytical Chemistry

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1 answer 67 views

Calculate the enthalpy change for the following reaction using Hess's Law: 2SO3(g) → 2SO2(g) + O2(g)Given the following enthalpy changes:2SO3(g) + ΔH1 → 2SO2(g) + O2(g); ΔH1 = 198.2 kJ/molSO2(g) + 1/2O2(g) + ΔH2 → SO3(g); ΔH2 = -98.9 kJ/mol

asked Jan 23 in Chemical reactions

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1 answer 82 views

Calculate the enthalpy change for the dissolution of 5 grams of sodium chloride in 50 mL of water if the temperature of the solution decreases from 25 °C to 21 °C. The density of the solution is 1.0 g/mL and the specific heat capacity of the solution is 4.18 J/g°C. (Assume the heat exchange between the solution and the surroundings is negligible)

asked Jan 23 in ThermoChemistry

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1 answer 98 views

A chemist mixes 0.1 mol of hydrogen (H2) with 0.2 mol of nitrogen (N2) in a 2 L flask at 400°C. The reaction H2(g) + N2(g) ⇌ 2NH3(g) establishes equilibrium. Calculate the equilibrium concentrations of hydrogen, nitrogen, and ammonia if the Kc value of the reaction at this temperature is 1.5 x 10^-2.

asked Jan 22 in Chemical equilibrium

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1 answer 42 views

When might individuals experience cognitive dissonance?

asked Jan 17 in Psychology

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1 answer 61 views

What is criterion validity?

asked Jan 16 in Psychology

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1 answer 39 views

What is data saturation in qualitative research?

asked Jan 16 in Psychology

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1 answer 38 views

What are some key components of a well-developed hypothesis?

asked Jan 14 in Psychology

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1 answer 54 views

What is sleep?

asked Jan 14 in Psychology

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1 answer 54 views

What is the role of social justice in community psychology?

asked Jan 13 in Psychology

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1 answer 35 views

Which type of joints do not allow any movement of the bones?

asked Jan 8 in Science

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1 answer 91 views

What kind of charges do protons give the nucleus?

asked Jan 7 in Science

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1 answer 69 views

What is a prerequisite for fertilization to take place in plants?

asked Jan 6 in Science

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