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What is the formal charge on the nitrogen atom in the ammonium ion (NH4+)? Show the calculation and explain whether the ion is a positive or negative ion based on the formal charge.

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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How can undergraduate chemistry students be exposed to current research in the field, despite limitations in access to research facilities and conferences?

asked Mar 1 in Chemical education by TheScientist (138k points)

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What are the factors that affect the phosphorescent properties of materials used in organic light-emitting devices (OLEDs)?

asked Mar 1 in PhotoChemistry by TheScientist (138k points)

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What is the enthalpy change associated with the fusion of 45.0 g of ice at 0°C? Given the enthalpy of fusion for water is 6.01 kJ/mol.

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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How does the wavelength of light affect the photochemical properties of silver halides in modern photographic emulsions?

asked Feb 28 in PhotoChemistry by TheScientist (138k points)

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What factors affect the absorption, distribution, metabolism, and excretion of drugs in the human body and how can medicinal chemists optimize a drug's pharmacokinetic properties to improve therapeutic efficacy?

asked Mar 1 in Medicinal Chemistry by TheScientist (138k points)

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What is the enthalpy change when calcium chloride dihydrate (CaCl2•2H2O) is heated to release its water of hydration, given that the enthalpy of formation of CaCl2 is -795.8 kJ/mol and the heat capacity of CaCl2•2H2O is 155.09 J/(mol K)?

asked Mar 1 in ThermoChemistry by TheScientist (138k points)

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What is the formal charge of the nitrogen (N) atom in the molecule of ammonia (NH3)?

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What is the formal charge of the chlorine atom in the compound ClO3^-? Show your calculation and explain whether the chlorine atom has a positive or negative formal charge in this compound.

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the formal charge of the chlorine atom in the molecule ClO2? Show your calculations.

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What is the formal charge of the central atom in the compound SF4 (sulfur tetrafluoride)? Show your calculation and explain whether the molecule is overall neutral or has a partial charge.

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the efficiency of an electrochemical cell that operates with a potential difference of 1.5V and has a maximum electrical work output of 2500 J when 10 moles of electrons are transferred in the cell reaction? (Assuming no other energy losses)

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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How can we accurately predict the electronic and magnetic properties of metal-organic frameworks using quantum chemistry methods?

asked Mar 1 in Quantum Chemistry by TheScientist (138k points)

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What is the heat of formation of methane (CH4) at standard conditions (25°C and 1 atm pressure) using the bond energy method?

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What are the most effective methods for treating and mitigating the environmental impact of hazardous waste generated by industrial processes and how can they be implemented in an economically feasible way?

asked Mar 1 in Environmental Chemistry by TheScientist (138k points)

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What is the rate of diffusion of oxygen through a 2 cm thick slab of air at 25°C and 1 atm pressure? The diffusivity of oxygen is 0.20 cm^2/s.

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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How can we accurately predict the behavior and properties of a particular molecule using computational methods, and what are the potential applications of this information in fields such as drug design and materials science?

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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What are the most common types of chemical reactions and equations used in everyday life, and how can these be used to help us better understand the world around us? Provide specific examples to support your answer.

asked Mar 1 in Chemical education by TheScientist (138k points)

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How can the use of synthetic fertilizers and pesticides in agriculture be reduced to promote sustainable agriculture, while ensuring optimal crop yields and minimizing negative impacts on the environment and human health?

asked Mar 1 in Environmental Chemistry by TheScientist (138k points)

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How does the Zeta potential of colloidal particles change with pH and ionic strength? Provide a detailed explanation and relevant examples from research studies.

asked Feb 28 in Surface Chemistry by TheScientist (138k points)

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