Answers by NamMacdonald

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How can liquid crystals be designed and synthesized to optimize their optical and electro-optical properties for use in high-resolution display technology?

answered 6 days ago in Materials Chemistry

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What strategies can be implemented to help students understand and retain the concepts of chemical reactions and equations, despite inadequate emphasis on this subject in their formal education?

answered Jan 30 in Chemical education

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What is the concentration of chloride ion in a 0.1 M hydrochloric acid solution using a chloride selective electrode?

answered Jan 30 in Analytical Chemistry

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Calculate the enthalpy change when 50 mL of 0.2 M sodium chloride solution is mixed with 50 mL of 0.2 M silver nitrate solution. The final temperature of the solution was found to be 25°C and the initial temperature of the reactants was 30°C. The specific heat of the solution is 4.18 J/g°C, and the density of the solution is 1.00 g/mL.

answered Jan 23 in ThermoChemistry

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Calculate the corrosion current density for a zinc-copper galvanic couple, with a surface area of 10 cm² each, immersed in a 0.1 M copper sulfate solution and a 0.1 M zinc sulfate solution, respectively. Given that the exchange current density for the zinc and copper electrodes are 0.0035 A/cm² and 0.1184 A/cm², respectively, What will be the corrosion rate for the zinc electrode in micrometers per year?

answered Jan 23 in ElectroChemistry

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A chemistry student is given a sample of a compound containing sulfur, oxygen, and carbon. The student needs to determine the mass percentages of each element in the compound using mass balance calculations. The sample has a total mass of 5.00 grams, and the student devises an experiment to isolate each of the three elements by chemical reactions, and the mass of each element is recorded as follows: 1.20 g sulfur, 1.80 g oxygen, and 2.00 g carbon. What are the mass percentages of sulfur, oxygen, and carbon in the compound?

answered Jan 22 in Analytical Chemistry

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What is the three-phase model of trauma therapy?

answered Jan 20 in Psychology

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What has revolutionized human society over the past several decades?

answered Jan 6 in Science

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The chemical symbol of which ion is written first in ionic compounds?

answered Dec 31, 2024 in Science

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