Questions by Aline0805519

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1 answer 17 views

How does the pH affect the rate of enzymatic reaction catalyzed by lactase?

asked 3 days ago in BioChemistry

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1 answer 22 views

How does the concentration of reactants in a reaction affect the reaction rate under different reaction mechanisms?

asked Feb 19 in Chemical kinetics

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1 answer 37 views

What specific factors affect the photochemical properties of nanoparticles, and how can these properties be tuned for potential applications in fields such as nanomedicine and energy conversion?

asked Feb 14 in PhotoChemistry

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1 answer 34 views

What is the specific procedure for preparing 2,4,6-trinitrotoluene from toluene and nitric acid, including the necessary reagents, reaction conditions, and safety precautions to be taken throughout the process?

asked Feb 13 in Chemical synthesis

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1 answer 9 views

How can we design drugs that specifically target cancer cells with HER2 receptors?

asked Feb 12 in Medicinal Chemistry

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1 answer 10 views

How can the synthesis of carbon nanotubes be optimized for higher yield and purity using novel synthetic methods and characterization techniques?

asked Feb 11 in Materials Chemistry

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1 answer 59 views

How can the lack of diversity in the chemistry field be addressed to promote a more inclusive and representative community, and increase creativity and innovation in scientific research?

asked Jan 30 in Chemical education

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1 answer 63 views

If the equilibrium constant (Kc) for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) at a certain temperature is 4.0×10^-3, and a catalyst is added to speed up the reaction, how will the equilibrium position shift? Calculate the new equilibrium constant if the catalyst increases the rate of the forward reaction by a factor of 10.

asked Jan 30 in Chemical equilibrium

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1 answer 97 views

How does the pH level affect the concentration of heavy metals in water affected by acid mine drainage, and what chemical processes occur to cause this impact on water quality?

asked Jan 30 in Environmental Chemistry

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1 answer 93 views

Identify the type of bonding that occurs in sodium chloride, graphite, and copper based on their respective properties and explain the reasons behind each type of bonding.

asked Jan 30 in Chemical bonding

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1 answer 64 views

A student performed an experiment to synthesize aspirin using 5 grams of salicylic acid and an excess of acetic anhydride. After the reaction was completed, the student collected 4.2 grams of aspirin. What is the percent yield of this experiment?

asked Jan 22 in Chemical reactions

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1 answer 60 views

A student needs to calculate the enthalpy change for a chemical reaction given the enthalpies of formation of the reactants and products. The specific problem is: Calculate the enthalpy change for the reaction:CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)Given the following enthalpies of formation:ΔHf(CH4) = -74.8 kJ/molΔHf(CO2) = -393.5 kJ/molΔHf(H2O) = -285.8 kJ/mol

asked Jan 22 in Chemical reactions

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1 answer 37 views

What is the disuse hypothesis?

asked Jan 20 in Psychology

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1 answer 45 views

According to psychodynamic theory, how do unconscious conflicts influence behaviour?

asked Jan 20 in Psychology

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1 answer 27 views

Why did Watson and Raynor's experiment on Little Albert have ethical concerns?

asked Jan 20 in Psychology

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1 answer 35 views

Why do psychiatrists use rating scales?

asked Jan 17 in Psychology

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1 answer 29 views

Who were the participants in Dr. Lydia Kwok's study?

asked Jan 17 in Psychology

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1 answer 55 views

What are the strengths of a quantitative research approach?

asked Jan 16 in Psychology

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1 answer 14 views

Why is it important to consider the historical and social context when evaluating theories in psychology?

asked Jan 16 in Psychology

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1 answer 31 views

Who proposed the expected utility theory?

asked Jan 15 in Psychology

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