Recent activity by GeraldoPatte

1 answer 44 views

How does the size and shape of nanoparticles affect their photochemical properties, and what methods can be used to optimize these properties for potential applications in areas such as solar energy conversion and phototherapy?

answered Feb 24 in PhotoChemistry

1 answer 30 views

How does the signal transduction pathway use chemical reactions to convey information from the cell membrane to the nucleus?

answered Feb 24 in BioChemistry

1 answer 33 views

How does the reaction rate of the decomposition of hydrogen peroxide vary with temperature, and what is the activation energy of this reaction?

asked Feb 24 in Chemical kinetics

1 answer 32 views

How does the chemical structure of photovoltaic materials affect their photochemical properties and efficiency in converting light energy into electrical energy?

answered Feb 18 in PhotoChemistry

1 answer 25 views

What is the appropriate ratio of acetic anhydride to salicylic acid to produce the maximum yield of acetylsalicylic acid in the preparation reaction?

asked Feb 17 in Chemical synthesis

1 answer 29 views

What is the mechanism by which sunscreen agents absorb harmful UV radiation, and how can the efficiency of sunscreen be measured and optimized through experimentation?

answered Feb 14 in PhotoChemistry

1 answer 38 views

How can we use molecular dynamics simulations to study the protein folding process and predict the most stable conformation of a protein?

answered Feb 13 in Computational Chemistry

1 answer 30 views

How can we design a new chemotherapy drug that targets cancer cells specifically, without harming healthy cells, and how can we ensure that the drug reaches the cancer cells effectively?

answered Feb 12 in Medicinal Chemistry

1 answer 80 views

What is the predicted color of copper(II) sulfate pentahydrate ([Cu(H2O)4]SO4•H2O) based on its electronic configuration?

asked Feb 12 in Inorganic Chemistry

1 answer 30 views

How can chemistry teachers make the subject more interesting and engaging for students who lack interest in the subject?

answered Feb 6 in Chemical education

1 answer 33 views

How can chemistry educators provide better support and resources for students with learning disabilities, such as dyslexia or ADHD, to ensure they have equal opportunities to succeed in the subject?

answered Feb 4 in Chemical education

1 answer 36 views

Calculate the standard enthalpy change for the dissolution of 5.00 g of solid sodium hydroxide (NaOH) in water, given that the molar enthalpy of dissolution of NaOH is -44.51 kJ/mol. Assume that the specific heat capacity and density of the solution are the same as pure water and that no heat is lost to the surroundings during the dissolution process.

answered Feb 3 in Chemical thermodynamics

1 answer 80 views

Calculate the enthalpy change for the ionization of sodium chloride given that the enthalpy of formation of NaCl is -411 kJ/mol, and the ionization energy of Na and Cl are 496 kJ/mol and 349 kJ/mol respectively.

answered Jan 23 in ThermoChemistry

1 answer 110 views

A student needs to determine the standard electrode potential for the following reaction: Fe3+ + e- → Fe2+ Using the standard electrode potentials of Fe3+/Fe2+ and Ag+/Ag, calculate the standard cell potential for the following reaction: 2Ag+ (aq) + Fe(s) → 2Ag(s) + Fe2+ (aq) Determine if this reaction is spontaneous or nonspontaneous under standard conditions.

asked Jan 22 in ElectroChemistry

1 answer 55 views

A piece of zinc metal is placed in a beaker containing an acidic solution, while a copper electrode is also placed in the same solution. The copper electrode is connected to the positive terminal of a voltmeter, while the zinc electrode is connected to the negative terminal of the voltmeter. If the measured potential between the two electrodes is -0.76 V, what is the corrosion potential of the zinc electrode?

answered Jan 22 in ElectroChemistry

1 answer 122 views

A chemistry student was given a sample of a white crystalline substance, suspected to be a mixture of sodium chloride (NaCl) and potassium chloride (KCl). The student performed an analysis and found that the sample contained 64% chlorine by mass. Calculate the mass percentage of sodium chloride and potassium chloride present in the mixture.

answered Jan 22 in Analytical Chemistry

1 answer 101 views

What is the major product obtained when 1,3-butadiene undergoes electrophilic addition reaction with hydrogen chloride?

answered Jan 21 in Organic Chemistry

1 answer 99 views

What is the amygdala?

asked Jan 20 in Psychology

1 answer 77 views

According to the social identity theory, why do individuals form social groups?

asked Jan 20 in Psychology

1 answer 46 views

Who conducted the social identity theory?

asked Jan 17 in Psychology

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