Recent activity by JamalUsn1353

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What is the optimum reaction time and temperature for the synthesis of polyethylene oxide from ethylene oxide monomer, and how does altering these parameters affect the molecular weight and properties of the resulting polymer?

asked Feb 22 in Chemical synthesis

1 answer 33 views

How does the molecular weight of a polymer-based biomaterial affect its performance in tissue engineering applications?

answered Feb 21 in Polymer Chemistry

1 answer 34 views

What is the effect of varying temperature on the selectivity of the reaction between compound A and compound B, and how does this relate to the reaction rate? Provide evidence and explain the mechanism behind any observed changes in selectivity.

answered Feb 20 in Chemical kinetics

1 answer 38 views

What is the balanced chemical equation for the thermal decomposition of calcium carbonate into calcium oxide and carbon dioxide gas?

answered Feb 17 in Chemical reactions

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How does the selective oxidation of hydrocarbons on metal surfaces occur, and what factors influence the selectivity of this reaction?

answered Feb 14 in Surface Chemistry

1 answer 34 views

How does Nitrogen and Phosphorus pollution affect the concentration of dissolved oxygen in water and what chemical processes contribute to this effect?

answered Feb 14 in Environmental Chemistry

1 answer 58 views

What is the hybridization state and orbital geometry of the carbon atom in the molecule CH3OH?

answered Feb 13 in Chemical bonding

1 answer 50 views

How does eutrophication affect the oxygen levels in aquatic ecosystems, and how does this impact the overall health of the ecosystem?

asked Feb 13 in Environmental Chemistry

1 answer 80 views

How can we design a new drug to treat inflammatory bowel disease (IBD), which targets the specific receptors present in the gastrointestinal tract and reduces inflammation without causing side effects?

answered Feb 12 in Medicinal Chemistry

1 answer 34 views

How can concepts such as quantum mechanics and molecular orbital theory be simplified for students struggling to understand complex chemical concepts in order to improve their understanding and academic success in chemistry?

asked Feb 5 in Chemical education

1 answer 48 views

How can chemistry teachers create engaging and interactive classroom activities to help increase student interest and participation in chemistry classes?

asked Feb 5 in Chemical education

1 answer 89 views

Does the concentration of reactants in a chemical reaction affect the reaction yield, and if so, what is the relationship between the two variables?

answered Feb 4 in Chemical kinetics

1 answer 86 views

How can we increase the exposure to chemistry in everyday life for individuals with different educational backgrounds and ages?

asked Jan 30 in Chemical education

1 answer 95 views

Many students show a lack of interest in chemistry because they find it difficult to relate to their daily lives. How can teachers incorporate real-life examples and applications of chemistry concepts in their classroom teaching to increase students' interest and engagement in the subject?

answered Jan 30 in Chemical education

1 answer 96 views

Suppose you are given a sample containing an unknown concentration of copper ions. Using colorimetry, how would you determine the concentration of copper ions in the sample? Provide a step-by-step procedure and explain the principles behind each step.

answered Jan 30 in Analytical Chemistry

1 answer 79 views

Identify the unknown compound in a given sample using mass spectrometry and provide its chemical formula, molecular weight, and possible functional groups present in the compound.

answered Jan 30 in Analytical Chemistry

1 answer 120 views

Calculate the enthalpy change of the polymerization of styrene using the following information: Reactants: - Styrene: C8H8 (l) - Peroxide initiator: C6H5OOC(CH3)3 (l) Products: - Polystyrene: (C8H8)n (s)- Byproduct: CO2 (g)Given information: - Heat of formation of CO2 (g) = -393.5 kJ/mol - Mass of styrene used = 50 g - Molarity of the initiator solution = 0.3 M - Volume of the initiator solution used = 25 mL - Density of the initiator solution = 0.89 g/mL - The reaction is carried out at a constant pressure of 1 atm and a temperature of 25°C.

answered Jan 23 in ThermoChemistry

1 answer 85 views

Why is the use of reclaimed language an ongoing process?

answered Jan 20 in Psychology

1 answer 62 views

What is social change?

asked Jan 20 in Psychology

1 answer 45 views

According to the social cognitive theory, how can modeling influence behaviour?

answered Jan 20 in Psychology

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