Questions by RobtGranier

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1 answer 21 views

How does the pH level affect the rate of the photochemical reaction for the process of hydrogen peroxide degradation under UV light?

asked 3 days ago in PhotoChemistry

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1 answer 23 views

What is the effect of the excitation wavelength on the quantum yield and fluorescence lifetime of a commercial fluorescent dye? Can you explain the mechanism behind these effects?

asked 5 days ago in PhotoChemistry

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1 answer 20 views

What is the critical temperature of a substance and how does it affect its phase behavior? Provide an example with the phase diagram of CO2 to illustrate your answer.

asked 6 days ago in Physical Chemistry

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1 answer 25 views

How does surface modification of polymers using plasma treatment impact the surface energy and wettability of the polymer?

asked Feb 17 in Surface Chemistry

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1 answer 27 views

What factors affect the solubility of a substance in a solvent, and how can we use this knowledge to determine the solubility of a given substance in a particular solvent?

asked Feb 14 in Chemical bonding

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1 answer 41 views

What is the effect of ligand substitution on the thermodynamic stability of a coordination complex? Provide specific examples of ligand substitution reactions and their respective stability constants to support your answer.

asked Feb 13 in Coordination Chemistry

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1 answer 9 views

How can the synthesis and characterization of coordination compounds be used to design more effective chemotherapy drugs for cancer treatment?

asked Feb 11 in Coordination Chemistry

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1 answer 45 views

How can the relative stabilities of different inorganic compounds be predicted based on their enthalpies of formation and bond energies?

asked Feb 10 in Inorganic Chemistry

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1 answer 42 views

How can the durability and adhesion properties of polymer-based coatings and paints be improved for use on metal surfaces in harsh environments?

asked Feb 7 in Polymer Chemistry

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1 answer 10 views

How can chemistry educators improve the emphasis on safety protocols in chemistry labs to ensure that students are better prepared for chemical hazards that can occur during experiments and research?

asked Feb 4 in Chemical education

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1 answer 53 views

Consider a zinc electrode in a concentration cell that is connected to a copper electrode through a salt bridge. During the electrolysis of an aqueous solution of ZnSO4, a current of 2.5 A is passed through the cell for 20 minutes. Calculate the mass of zinc deposited on the electrode during this time assuming 100% efficiency. (Molar mass of zinc = 65.38 g/mol)

asked Feb 3 in ElectroChemistry

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1 answer 27 views

Calculate the standard enthalpy of reduction for the following reaction: Fe2O3 (s) + 3 H2(g) → 2 Fe(s) + 3 H2O(g)Given: ΔH°f for Fe2O3 (s) = -824.2 kJ/mol ΔH°f for H2O(g) = -241.8 kJ/molΔH°f for Fe(s) = 0 kJ/mol

asked Feb 3 in ThermoChemistry

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1 answer 82 views

How does a specific metabolite pathway influence the behavior of cancer cells in response to chemotherapy?

asked Jan 30 in BioChemistry

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1 answer 45 views

How can capillary electrophoresis be used to accurately identify and quantify the different components present in a mixed sample of amino acids?

asked Jan 29 in Analytical Chemistry

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1 answer 56 views

Calculate the heat required to sublime 34.5 g of dry ice (solid CO2) at a constant temperature and pressure, given that the heat of sublimation of CO2 is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry

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1 answer 69 views

A gas phase reaction occurs according to the following equation: A(g) + 2B(g) -> C(g) + D(g)The reaction is carried out at a total pressure of 2 atm and at 298 K. The initial concentrations of A and B are 0.1 M and 0.2 M, respectively. The rate of formation of C is measured to be 0.02 M/s. What is the rate of disappearance of B?

asked Jan 22 in Physical Chemistry

0 votes

1 answer 52 views

How does the Selective Exposure Theory relate to persuasion?

asked Jan 20 in Psychology

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1 answer 32 views

Where did the concept of 'existential angst' originate?

asked Jan 20 in Psychology

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1 answer 40 views

When might social loafing occur?

asked Jan 20 in Psychology

0 votes

1 answer 53 views

What are the implications of the self-determination theory for positive psychology?

asked Jan 20 in Psychology

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