Recent activity by Margene00368

1 answer 36 views

What is the percent yield of a reaction if 5.5 grams of product were obtained from the reaction of 7.8 grams of reactant and the theoretical yield of the product is 9.2 grams?

answered Feb 22 in Chemical reactions

1 answer 32 views

What is the effect of alloy composition and microstructure on the mechanical properties (such as tensile strength and ductility) of aluminum-copper alloys designed for use in aerospace applications?

answered Feb 20 in Materials Chemistry

1 answer 32 views

How does the geometry of metallofullerenes and metalloclusters affect their reactivity with different ligands?

asked Feb 20 in Coordination Chemistry

1 answer 29 views

What is the coordination chemistry of the chelating agent ethylenediaminetetraacetic acid (EDTA) and how does it work in chelation therapy to remove heavy metal toxins from the body?

asked Feb 19 in Coordination Chemistry

1 answer 37 views

What is the concentration of ammonia and heavy metals in landfill leachate and what is their impact on groundwater quality?

answered Feb 18 in Environmental Chemistry

1 answer 24 views

How does the addition of boron and nitrogen atoms affect the properties of graphene, and how can this information be used to improve the performance of electronic devices using graphene?

answered Feb 17 in Materials Chemistry

1 answer 81 views

How can we effectively clean up oil spills in bodies of water to minimize the environmental impact?

asked Feb 12 in Environmental Chemistry

1 answer 73 views

How can the synthesis of nanoparticles using sustainable and environmentally friendly methods be improved in order to minimize the negative environmental impact of current synthesis methods in materials chemistry?

answered Feb 11 in Materials Chemistry

1 answer 104 views

How can the size, shape and composition of quantum dots be precisely controlled using innovative synthetic methods, and how does this affect their optoelectronic properties and potential applications in technologies such as light-emitting diodes, solar cells and bioimaging?

answered Feb 10 in Materials Chemistry

1 answer 36 views

How can environmental chemistry principles be incorporated into the curriculum of high school chemistry courses effectively, to ensure students have a better understanding of the impact of chemicals and pollutants on the environment and human health?

asked Feb 5 in Chemical education

1 answer 38 views

How can students perform chemistry experiments and gain practical knowledge in the absence of necessary laboratory equipment and facilities due to limited access?

asked Feb 5 in Chemical education

1 answer 95 views

Calculate the standard enthalpy change for the reaction in which 50.0 mL of 1.0 M HCl is mixed with 50.0 mL of 1.0 M NaOH in a constant pressure calorimeter using the following data: the temperature of the HCl and NaOH solutions are both initially 25.0 °C, and the temperature of the mixture increases to 32.0 °C. The specific heat of the solution is 4.18 J/(g·°C) and the density of the solution is 1.00 g/mL. The reaction is: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

answered Feb 3 in Chemical thermodynamics

1 answer 96 views

What is the coordination number and geometry of the metal ion at the active site of the metalloenzyme carbonic anhydrase? How does the coordination environment of the metal ion contribute to the enzyme's catalytic activity?

asked Jan 31 in Coordination Chemistry

1 answer 100 views

How can practical applications of chemistry be integrated and emphasized more effectively in chemical education to help students better bridge the gap between theory and real-life scenarios?

asked Jan 30 in Chemical education

1 answer 96 views

How can X-ray diffraction be utilized to determine the crystalline structure and composition of a given sample?

asked Jan 30 in Analytical Chemistry

1 answer 64 views

How can capillary electrophoresis be used to determine the presence and concentration of specific ions in a sample solution? Additionally, what factors affect the separation and detection of these ions in capillary electrophoresis analysis?

answered Jan 29 in Analytical Chemistry

1 answer 82 views

Calculate the enthalpy change for the oxidation of 2 moles of iron, given the standard enthalpy of formation for FeO is -272.2 kJ/mol and that of Fe2O3 is -824 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 55 views

Calculate the amount of heat energy released when 50 mL of 1 M hydrochloric acid (HCl) is mixed with 50 mL of 1 M sodium hydroxide (NaOH) solution. The heat of neutralization for the reaction between HCl and NaOH is -57.1 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 80 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

asked Jan 22 in Surface Chemistry

1 answer 46 views

When using a systemic approach, what is the goal of community psychologists?

asked Jan 20 in Psychology

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