Questions by KariMcCleary

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1 answer 90 views

What is the effect of increasing the pH on the equilibrium position of the redox reaction between iodine and iodide ions?

asked Feb 24 in Chemical equilibrium

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1 answer 89 views

What is the optimized reaction condition, such as temperature, concentration, and catalyst, for producing polyvinyl alcohol with a high molecular weight from vinyl acetate monomer?

asked Feb 22 in Chemical synthesis

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1 answer 85 views

What is the enthalpy of ionization for a lithium atom when it loses one electron to form a Li+ ion in a gas phase? Given that the energy required to remove an electron from a gaseous Li atom is 520 kJ/mol.

asked Feb 20 in ThermoChemistry

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1 answer 83 views

How do supramolecular assemblies affect the photochemical properties of organic compounds and how can this phenomenon be utilized in inorganic chemistry?

asked Feb 17 in PhotoChemistry

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1 answer 83 views

What polymers can be used to develop superabsorbent materials with high water retention capacity and how can their properties be optimized for specific applications?

asked Feb 14 in Polymer Chemistry

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1 answer 143 views

How can we explain the role of chemistry in everyday life to a non-science person? Provide three specific examples to illustrate your explanation.

asked Feb 12 in Chemical education

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1 answer 94 views

How can the knowledge of the mechanism of photochemical reactions in organic compounds be used to predict the products formed and optimize reaction conditions for improved yield?

asked Feb 7 in PhotoChemistry

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1 answer 111 views

How can the conductivity and carrier mobility of a polymer-based electronic material be optimized to improve its performance as a semiconductor in electronic devices?

asked Feb 6 in Polymer Chemistry

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1 answer 93 views

Calculate the standard enthalpy change for the phase transition reaction of solid carbon dioxide (dry ice) at -78.5°C to gaseous carbon dioxide at 1 atm and 25°C given that the enthalpy of formation of solid carbon dioxide and gaseous carbon dioxide are -393.5 kJ/mol and -393.5 kJ/mol, respectively.

asked Feb 3 in Chemical thermodynamics

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1 answer 170 views

What is the activation energy and reaction rate constant for the Cl + CH4 -> HCl + CH3 reaction at 298 K, calculated using quantum chemical methods?

asked Jan 31 in Computational Chemistry

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1 answer 142 views

What is the concentration of iron (II) in a sample of water collected from a local stream, given that the absorbance of the sample is 0.35 at a wavelength of 565 nm? The iron (II) ions form a complex with 1,10-phenanthroline, which has a molar extinction coefficient of 7.58 x 10^3 L mol^-1 cm^-1 at the same wavelength.

asked Jan 30 in Analytical Chemistry

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1 answer 155 views

A 25 g sample of water at 25°C is heated by 200 J. The temperature of the water increases to 40°C. Calculate the specific heat capacity of water.

asked Jan 22 in Chemical thermodynamics

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1 answer 100 views

Who is responsible for the success of community psychology initiatives?

asked Jan 20 in Psychology

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1 answer 53 views

What are some limitations of the fear-avoidance model?

asked Jan 16 in Psychology

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1 answer 108 views

What is the Health Action Process Approach?

asked Jan 15 in Psychology

0 votes

1 answer 157 views

What is the definition of discrimination?

asked Jan 15 in Psychology

0 votes

1 answer 69 views

Which organ is a wide tube connecting the small intestine with the anus?

asked Jan 8 in Science

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1 answer 129 views

When do hammerhead sharks usually hunt?

asked Jan 8 in Science

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1 answer 128 views

What term did schrödinger use for regions around the nucleus where electrons are most likely to be?

asked Jan 7 in Science

0 votes

1 answer 201 views

What burns to produce the white light in fireworks displays?

asked Jan 6 in Science

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