Recent activity by TeshaPennell

1 answer 27 views

What is the effect of reactant orientation on the rate of reaction between hydrogen peroxide and iodide ions?

asked Feb 22 in Chemical kinetics

1 answer 34 views

What is the significance of the Michaelis-Menten equation in enzyme kinetics and how does it relate to the rate of enzyme-catalyzed reactions? Provide an explanation with appropriate mathematical computations and examples.

asked Feb 20 in BioChemistry

1 answer 44 views

What is the pH of 0.1 M solution of HCl knowing that its dissociation constant is 1.3 x 10^-4?

asked Feb 20 in Inorganic Chemistry

1 answer 38 views

What are the different stimuli-responsive behaviors exhibited by polymer-based smart materials and how do these behaviors make these materials useful in various applications such as sensing, drug delivery, and tissue engineering?

answered Feb 14 in Polymer Chemistry

1 answer 82 views

How many kJ of heat are released when 2.5 g of octane undergo complete combustion according to the reaction:$$C_8H_{18} + 12.5 O_2 \rightarrow 8 CO_2 + 9 H_2O$$Given: Enthalpy of combustion of octane = -5,470 kJ/mol.

answered Feb 13 in ThermoChemistry

1 answer 73 views

How does the surface chemistry of detergents and cleaning agents allow them to remove dirt and stains from surfaces? What specific chemical processes and interactions occur between the cleaning agents and the dirt/stains on a molecular level?

asked Feb 12 in Surface Chemistry

1 answer 79 views

How can the synthesis method and characterization techniques be optimized to produce a new material for use in a gas sensor with improved selectivity and sensitivity towards a specific gas?

answered Feb 11 in Materials Chemistry

1 answer 37 views

How can the industrial wastewater be treated effectively to reduce its impact on the environment?

answered Feb 7 in Environmental Chemistry

1 answer 62 views

How can magnetic nanoparticles be synthesized and characterized for efficient drug delivery?

answered Feb 6 in Materials Chemistry

1 answer 37 views

Considering carbohydrate metabolism and regulation in the human body, how does the regulation of glycolysis and gluconeogenesis work to maintain blood glucose levels during periods of fasting or intense exercise? Include both the enzymes involved and the hormonal regulation mechanisms in your answer.

asked Feb 3 in BioChemistry

1 answer 55 views

Calculate the standard enthalpy of formation of ammonia gas (NH3) using the following information:- Standard enthalpy of formation for nitrogen gas (N2) = 0 kJ/mol- Standard enthalpy of formation for hydrogen gas (H2) = 0 kJ/mol- Standard enthalpy of formation for ammonia gas (NH3) = -46 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 75 views

Calculate the standard enthalpy change (∆H°) for the following reaction involving liquids:C6H12O6 (s) + 6O2 (g) → 6CO2 (g) + 6H2O (l)

answered Feb 3 in Chemical thermodynamics

1 answer 63 views

What is the effect of changing the ratio of reactants on the rate of a chemical reaction? Specifically, which reactant(s) have the greatest impact on the reaction rate when its ratio is altered, and how does this impact vary based on the overall stoichiometry of the reaction? Provide experimental evidence to support your conclusions.

asked Feb 3 in Chemical kinetics

1 answer 72 views

How many milligrams of lead are present in a 50 mL water sample with a concentration of 0.05 ppm, determined using atomic absorption spectroscopy with a calibration curve?

asked Jan 30 in Analytical Chemistry

1 answer 53 views

Calculate the energy required to break a carbon-carbon single bond (C-C) with a bond length of 1.54 Å using the average bond-dissociation energy of 347 kJ/mol for this type of bond.

answered Jan 23 in Chemical reactions

1 answer 58 views

How does social identity theory relate to social justice?

answered Jan 20 in Psychology

1 answer 117 views

Compare and contrast schema therapy and cognitive-behavioural therapy.

answered Jan 20 in Psychology

1 answer 43 views

Where does the study of cognition focus?

asked Jan 20 in Psychology

1 answer 30 views

According to the Broca's area theory, what is the function of this area of the brain?

answered Jan 17 in Psychology

1 answer 16 views

Where might a cross-cultural psychologist look for the cause of acculturation stress?

answered Jan 17 in Psychology

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