Questions by CorneliusBur

0 votes

1 answer 25 views

What is the most efficient and economical method for synthesizing polyvinyl alcohol from vinyl acetate monomer, considering the purity, yield, and properties of the resulting polymer?

asked Feb 21 in Chemical synthesis

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1 answer 29 views

How does the presence of different concentrations of product affect the reaction rate of the iodine clock reaction?

asked Feb 20 in Chemical kinetics

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1 answer 26 views

How does temperature affect the degradation of polyethylene and polypropylene? What are the mechanisms of degradation and how can they be mitigated to extend the stability of these polymers?

asked Feb 17 in Polymer Chemistry

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1 answer 110 views

How can the toxicity of existing drugs be investigated and what specific alterations can be made in their chemical structure to reduce their toxicity while maintaining their therapeutic efficacy?

asked Feb 13 in Medicinal Chemistry

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1 answer 62 views

How can the principles of medicinal chemistry be applied to design drugs that selectively target cancer cells that overexpress specific receptors or enzymes, while avoiding harm to healthy cells?

asked Feb 10 in Medicinal Chemistry

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1 answer 31 views

How can the polymerization reaction of styrene monomer be controlled to achieve a desired degree of polymerization and molecular weight for the synthesis of polystyrene with specific physical and chemical properties?

asked Feb 10 in Chemical synthesis

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1 answer 37 views

How can benzyl chloride and ammonia be used to synthesize phenylalanine, and what conditions must be maintained in order to achieve a high yield of the desired product?

asked Feb 4 in Chemical synthesis

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1 answer 59 views

Calculate the standard free energy change, ΔG°, for the following redox reaction if the standard reduction potential of Ag⁺/Ag is +0.80 V and the standard reduction potential of Cu²⁺/Cu is +0.34 V:Ag⁺(aq) + Cu(s) → Ag(s) + Cu²⁺(aq)

asked Feb 3 in Chemical thermodynamics

0 votes

1 answer 78 views

Calculate the standard enthalpy change for the dissolution of 10 grams of NaCl in water at 25°C, given that the molar enthalpy of dissolution of NaCl is -3.9 kJ/mol.

asked Feb 3 in Chemical thermodynamics

0 votes

1 answer 68 views

How can mass spectrometry be used to identify an unknown organic compound?

asked Jan 29 in Analytical Chemistry

0 votes

1 answer 76 views

How can liquid chromatography be optimized to detect and quantify trace amounts of a specific compound in a complex mixture?

asked Jan 29 in Analytical Chemistry

0 votes

1 answer 71 views

Calculate the change in enthalpy for the reaction CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) given that the enthalpies of formation for CH4 (g), CO2 (g) and H2O (l) are -74.81 kJ/mol, -393.51 kJ/mol and -285.83 kJ/mol respectively.

asked Jan 23 in Physical Chemistry

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1 answer 85 views

Why is the Stanford prison experiment important?

asked Jan 20 in Psychology

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1 answer 59 views

How does social identity theory relate to social justice?

asked Jan 20 in Psychology

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1 answer 90 views

What is an advantage of mindfulness-based cognitive therapy?

asked Jan 16 in Psychology

0 votes

1 answer 44 views

What are some examples of metapsychological concepts?

asked Jan 16 in Psychology

0 votes

1 answer 102 views

How is a zero correlation represented on a scatter plot?

asked Jan 16 in Psychology

0 votes

1 answer 99 views

What does the diathesis-stress model suggest about depression?

asked Jan 15 in Psychology

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1 answer 97 views

How can the principles of the positive psychology movement be applied in practice?

asked Jan 15 in Psychology

0 votes

1 answer 129 views

Who posits that the grieving process has six stages: shock, denial, bargaining, guilt, depression and acceptance?

asked Jan 15 in Psychology

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