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Develop a process for the synthesis and purification of aspirin from salicylic acid, highlighting the key reaction steps and techniques used to obtain a high purity product.

asked Feb 4 in Chemical engineering by HoraceT7712 (2.0k points)

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Develop a process for the purification of caffeine from tea leaves using solvent extraction technique. Provide a detailed explanation of the steps involved in the process and the criteria that will determine the efficiency of the procedure.

asked Feb 4 in Chemical engineering by MerissaStins (1.8k points)

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Develop a polymer-based composite that can withstand extreme heat and high stress conditions, making it suitable for use in turbine engine components in aerospace applications.

asked Feb 4 in Polymer Chemistry by TysonNettles (1.5k points)

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Develop a design for a system that effectively treats the wastewater produced by a textile factory, addressing the removal of coloring agents, heavy metals, and other hazardous contaminants.

asked Feb 4 in Chemical engineering by TorySelwyn2 (2.1k points)

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Determine the zeta potential of silver nanoparticles using the electrophoretic mobility measured at different pH values ranging from 3 to 9.

asked Feb 4 in Surface Chemistry by MartyKindler (1.5k points)

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Determine the VSEPR geometry of the methane molecule (CH4) and draw its Lewis structure.

asked Feb 4 in Chemical bonding by RandellGunte (2.1k points)

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Determine the VSEPR geometry of PCl5 molecule and predict the bond angles.

asked Feb 4 in Chemical bonding by LaunaRxf8120 (1.7k points)

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Determine the vibrational frequencies and corresponding infrared spectra for a water molecule (H2O) using quantum chemistry calculations. Explain the observed peaks in the IR spectra in terms of the vibrational modes of the molecule.

asked Feb 4 in Quantum Chemistry by KWFErin73234 (1.9k points)

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1 answer 84 views

Determine the type of isomerism of the molecule CH3CH2CH2OH and draw its corresponding isomer(s).

asked Feb 4 in Chemical bonding by LaunaBeyers (1.8k points)

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Determine the type of inorganic solid formed between Strontium (Sr) and Oxygen (O) based on their electronegativities and bonding behavior. Is it ionic, covalent or metallic?

asked Feb 4 in Inorganic Chemistry by DaisyThwaite (1.9k points)

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Determine the type of inorganic solid formed between Mg and O, and explain how you arrived at your conclusion.

asked Feb 4 in Inorganic Chemistry by JereGerald1 (1.6k points)

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Determine the type of inorganic compound formed when Magnesium (Mg) reacts with Oxygen (O2). Is it an ionic, covalent, or metallic compound? Explain your answer.

asked Feb 4 in Inorganic Chemistry by TonyaCombs22 (1.8k points)

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1 answer 47 views

Determine the Tafel slopes for the oxidation of H2 gas and the reduction of O2 gas using a platinum electrode in a 1 M acidic solution. The measured current densities at the anode and cathode were 0.5 mA/cm² and 0.3 mA/cm², respectively.

asked Feb 4 in ElectroChemistry by AudraNowlin6 (2.2k points)

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Determine the standard enthalpy of formation of nitrogen dioxide (NO2) given that the balanced equation for the combustion of one mole of NO2 is:4NO2(g) + 6H2O(l) → 4HNO3(aq) + 2NO(g)The standard enthalpies of formation for HNO3(l), H2O(l), and NO(g) are -174.1 kJ/mol, -285.8 kJ/mol, and 90.4 kJ/mol, respectively.

asked Feb 4 in Chemical thermodynamics by FinleyConsta (2.4k points)

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Determine the standard enthalpy of formation of methane (CH4) using Hess's Law, given the following reactions and enthalpy changes: 1. C(graphite) + 2H2(g) -> CH4(g) ΔH1 = -74.6 kJ/mol 2. 2H2(g) + O2(g) -> 2H2O(l) ΔH2 = -571.7 kJ/mol 3. C(graphite) + O2(g) -> CO2(g) ΔH3 = -393.5 kJ/mol.

asked Feb 4 in Chemical thermodynamics by BeatriceJ11 (2.0k points)

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Determine the standard enthalpy of formation of methane (CH4) given the following information: The standard enthalpy of formation of CO2 and H2O are -393.5 kJ/mol and -285.8 kJ/mol, respectively. The combustion of 0.50 g of methane in a bomb calorimeter resulted in a 1.20°C temperature increase of the surrounding water. The heat capacity of the bomb calorimeter is 5.85 kJ/°C.

asked Feb 4 in Chemical thermodynamics by PearlEaston (2.3k points)

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Determine the standard enthalpy of formation of ethanol (C2H5OH) given the following information: 1. The combustion of 1 mole of ethanol yields 1367 kJ of heat.2. The standard enthalpy of formation for CO2(g) and H2O(l) are -393.5 kJ/mol and -285.8 kJ/mol, respectively.

asked Feb 4 in Chemical thermodynamics by JordanHering (2.2k points)

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Determine the standard enthalpy of formation for propane (C3H8) using the following values: - C(graphite) + O2(g) → CO2(g) ΔH° = -393.5 kJ/mol- 2H2(g) + O2(g) → 2H2O(l) ΔH° = -572.4 kJ/mol- C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) ΔH° = -2220 kJ/mol

asked Feb 4 in Chemical thermodynamics by EusebiaGilla (1.8k points)

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1 answer 60 views

Determine the standard enthalpy of formation for methane (CH4) using the combustion reactions of methane and hydrogen gas (H2). Given the standard enthalpy of combustion for CH4 is -890.3 kJ/mol and the standard enthalpy of formation for H2O is -285.8 kJ/mol.

asked Feb 4 in Chemical thermodynamics by DanielPidgeo (2.1k points)

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Determine the standard enthalpy of formation for hydrogen chloride gas using the following data:H2(g) + Cl2(g) → 2HCl(g) ΔH = -184.6 kJ/molH2(g) + 1/2O2(g) → H2O(l) ΔH = -285.8 kJ/mol2HCl(g) + O2(g) → 2ClO(g) + H2O(l) ΔH = -518.2 kJ/mol Note: The standard enthalpy of formation for a compound is the change in enthalpy that occurs when one mole of the compound is formed from its constituent elements, with all substances in their standard state at a given temperature (usually 25°C) and pressure (usually 1 atm).

asked Feb 4 in Chemical thermodynamics by DeenaTrundle (2.2k points)

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