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How does the transportation method (car vs. public transportation) affect the carbon footprint of an individual and how can the impact be minimized?

asked Feb 28 in Environmental Chemistry by TheScientist (138k points)

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What is the optimal temperature and catalyst mixture for the synthesis of polypropylene from propylene monomer? Determine the yield and properties of the resulting polymer under these conditions.

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the BET surface area of activated carbon with a monolayer capacity of 25 mg/g and a multilayer capacity of 90 mg/g, given that the weight of the activated carbon used for the experiment was 5 g?

asked Mar 1 in Surface Chemistry by TheScientist (138k points)

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What are the main reasons that make it difficult for students to understand complex chemical concepts, and what strategies can be adopted to overcome these barriers to learning?

asked Mar 1 in Chemical education by TheScientist (138k points)

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What is the formal charge on the carbon atom and the nitrogen atom in the molecule NH₄⁺? Show your calculations and explain how you arrived at your answer using the formula for calculating formal charge.

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What are the possible reasons behind inadequate preparation for chemistry exams among students and how can these be addressed effectively?

asked Mar 1 in Chemical education by TheScientist (138k points)

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How many different isomers can be formed for a molecule having the chemical formula C4H10O? Provide the structures for each isomer.

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What is the corrosion potential of a galvanic couple composed of a Zn metal and a Cu metal in a 1 M Cu2+ solution at 298 K when the Zn electrode is at -0.76 V and the Cu electrode is at +0.34 V?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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How does the temperature affect the order parameter and phase transition of the nematic phase of a liquid crystal system using Monte Carlo simulations?

asked Feb 28 in Computational Chemistry by TheScientist (138k points)

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How can the viscosity of adhesives be optimized for their intended application using chemical engineering principles?

asked Feb 28 in Chemical engineering by TheScientist (138k points)

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What is the amount of heat needed to melt 25 grams of ice at its melting point if its enthalpy of fusion is 6.02 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the amount of heat involved in the neutralization of 25.0 mL of 0.1 M HCl with 25.0 mL of 0.1 M NaOH, given the heat of neutralization of HCl and NaOH to be -57.1 kJ/mol?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the yield of benzocaine obtained from the preparation of benzocaine using p-aminobenzoic acid and ethanol, and how does the yield vary with different temperatures?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the reaction mechanism of the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol, and how does the reaction conditions such as temperature and pressure affect the yield and properties of the polymer?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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How does the temperature of a system affect the energy transfer processes and molecular dynamics of a gas-phase reaction?

asked Feb 28 in Quantum Chemistry by TheScientist (138k points)

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What are the most effective methods to optimize the durability and surface properties of polyurethane-based coatings?

asked Mar 1 in Polymer Chemistry by TheScientist (138k points)

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What is the optimum reaction conditions (temperature, pressure, catalyst, etc.) for the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer to achieve the highest yield and desired molecular weight?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the amount of energy required to melt 50 grams of ice at 0 °C to water at the same temperature? Given the enthalpy of fusion of water is 6.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How does the wavelength of light affect the photochemical properties of photosensitive materials used in photography?

asked Feb 28 in PhotoChemistry by TheScientist (138k points)

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How has the understanding of atomic structure evolved over time in chemistry? What are the significant milestones in the history of atomic structure and how have they contributed to our current understanding of chemistry?

asked Feb 28 in Chemical education by TheScientist (138k points)

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