Recent activity by SoilaMacviti

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

asked 1 day ago in BioChemistry

1 answer 34 views

How do the photochemical properties of bioluminescent organisms differ from those of non-bioluminescent organisms and how can this be used to develop new materials and technologies in areas such as medicine and environmental monitoring?

asked 3 days ago in PhotoChemistry

1 answer 21 views

What is the Lewis structure for the molecule of carbon dioxide, and what is the official name of this type of molecular geometry?

answered 5 days ago in Chemical bonding

1 answer 22 views

What is the type of inorganic solid formed between lithium and fluorine, and what are the characteristic features of this type of solid?

asked 5 days ago in Inorganic Chemistry

1 answer 27 views

What is the electronegativity difference between a nitrogen atom (EN = 3.04) and an oxygen atom (EN = 3.44)?

answered 5 days ago in Chemical bonding

1 answer 25 views

How does the coordination of metal ions to enzymes and proteins affect their catalytic activity? Give examples of metalloenzymes and metalloproteins and explain their structural and functional roles in biological systems.

asked 6 days ago in Coordination Chemistry

1 answer 24 views

What is the effect of concentration of reactants on the reaction rate and efficiency of a chemical reaction?

answered 6 days ago in Chemical kinetics

1 answer 28 views

How can we increase diversity in the chemistry field and create equal opportunities for underrepresented groups?

answered Feb 13 in Chemical education

1 answer 33 views

How can we incorporate environmental chemistry concepts into traditional chemistry curriculums to increase awareness of the impact of chemistry on the environment?

asked Feb 13 in Chemical education

1 answer 37 views

What type of bond exists between a carbon atom and an oxygen atom in CO2?

asked Feb 13 in Chemical bonding

1 answer 32 views

What is the balanced chemical equation for the single replacement reaction between silver nitrate (AgNO3) and copper (Cu)?

asked Feb 13 in Chemical reactions

1 answer 28 views

What are the potential harmful effects of chemical pollutants on the environment, and how can environmental chemists work to mitigate these effects?

answered Feb 12 in Chemical education

1 answer 61 views

How can the process for the production of specialty chemicals be optimized to maximize yield and minimize waste?

asked Feb 10 in Chemical engineering

1 answer 32 views

How can computational chemistry and molecular modeling be used to predict the chemical and physical properties of a new drug molecule before it's synthesized, allowing researchers to make informed decisions about its potential effectiveness and safety?

asked Feb 5 in Physical Chemistry

1 answer 30 views

Calculate the standard enthalpy of formation of water (H2O) given the following information: ΔHf° of H2(g) = 0 kJ/molΔHf° of O2(g) = 0 kJ/molΔHf° of H2O2(l) = -188.2 kJ/mol

answered Feb 3 in ThermoChemistry

1 answer 68 views

Calculate the standard enthalpy change for the given reaction using the given data:2H2(g) + O2(g) --> 2H2O(l)Given:ΔHf°(H2O(l)) = -285.83 kJ/molΔHf°(O2(g)) = 0 kJ/molΔHf°(H2(g)) = 0 kJ/mol

answered Feb 3 in Chemical thermodynamics

1 answer 74 views

How does changing the temperature of a chemical reaction affect the activation energy barrier in the reaction? Use computational chemistry and molecular modeling to calculate the activation energy barriers for the same reaction at different temperatures and explain the change in activation energy with temperature.

asked Feb 3 in Physical Chemistry

1 answer 66 views

Calculate the enthalpy change for the hydrolysis of sucrose given the following information: Sucrose (C12H22O11) reacts with water to form glucose (C6H12O6) and fructose (C6H12O6). Delta H for the reaction is -190 kJ/mol. The enthalpy of formation for sucrose is -2227 kJ/mol, the enthalpy of formation for glucose is -1274 kJ/mol, and the enthalpy of formation for fructose is -1266 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 61 views

Calculate the corrosion current density of a stainless steel electrode in a 0.5 M HCl solution at 25 degrees Celsius, given that the polarization resistance of the electrode is 200 ohms and the corrosion potential is -0.3 V vs. the standard hydrogen electrode (SHE).

answered Jan 23 in ElectroChemistry

1 answer 54 views

A chemistry student wants to investigate the adsorption of a certain gas onto a solid surface. The student conducts an experiment and obtains the following data for different pressures of the gas:| Pressure (p) / atm | Quantity adsorbed (q) / g ||---|---|| 0.1 | 0.12 || 0.2 | 0.21 || 0.3 | 0.29 || 0.4 | 0.36 || 0.5 | 0.41 || 0.6 | 0.49 |Using the Langmuir adsorption isotherm, the student wants to determine the maximum amount of the gas that can be adsorbed onto the surface (q_max) and the rate constant for the adsorption process (k_ads). What are the values of q_max and k_ads for this gas-surface sys

answered Jan 22 in Surface Chemistry

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