Recent activity by CalebHartman

1 answer 33 views

What is the difference between an aldehyde and a ketone based on their structures and physical properties? Provide two examples of each and explain how their properties differ from each other.

asked Feb 22 in Organic Chemistry

1 answer 28 views

What is the effect of pH on the stability and particle size of colloidal silver nanoparticles synthesized using the chemical reduction method?

answered Feb 22 in Physical Chemistry

1 answer 31 views

What is the optimal ratio of terephthalic acid to ethylene glycol, and the best reaction conditions necessary, to obtain the highest yield of polyethylene terephthalate in the synthesis process?

asked Feb 21 in Chemical synthesis

1 answer 38 views

How does the cost-effectiveness of a chemical reaction change with varying reaction rates?

asked Feb 19 in Chemical kinetics

1 answer 33 views

How does the coordination environment of the central metal ion in the metalloenzyme carbonic anhydrase affect its enzymatic activity, and how can this be manipulated to improve or inhibit the enzyme's function?

answered Feb 19 in Coordination Chemistry

1 answer 30 views

What is the bond length between two hydrogen atoms in a hydrogen molecule (H2) if the distance between the nuclei of the two atoms is 0.074 nm?

answered Feb 18 in Chemical bonding

1 answer 44 views

What is the biochemical mechanism responsible for insulin resistance in type 2 diabetes, and how can it be targeted for therapeutic intervention?

answered Feb 17 in BioChemistry

1 answer 39 views

How does the absorption and emission of light affect the behavior and properties of different molecules and materials, and how can this knowledge be applied to develop more efficient photovoltaic cells?

asked Feb 17 in Quantum Chemistry

1 answer 42 views

What specific factors affect the photochemical properties of nanoparticles, and how can these properties be tuned for potential applications in fields such as nanomedicine and energy conversion?

answered Feb 14 in PhotoChemistry

1 answer 60 views

What is the bond order of CO molecule using molecular orbital theory?

answered Feb 13 in Chemical bonding

1 answer 67 views

What is the effect of insulin on the regulation of glucose levels in the body during a fasting state?

asked Feb 13 in BioChemistry

1 answer 35 views

How can polymer-based sensors and actuators be used to detect and respond to changes in temperature?

asked Feb 5 in Polymer Chemistry

1 answer 86 views

Calculate the standard enthalpy of formation of methane (CH4) given the following enthalpy data: C(graphite) + 2H2(g) → CH4(g) ΔH° = -74.8 kJ/mol ΔH°f[C(graphite)] = 0 kJ/molΔH°f[H2(g)] = 0 kJ/mol (Hint: Use Hess's Law and the fact that the standard enthalpy of formation of an element in its most stable state is zero.)

answered Feb 3 in ThermoChemistry

1 answer 84 views

What are some effective ways that chemistry educators can promote exposure to chemistry in everyday life among students who have limited knowledge or interest in the subject?

asked Jan 30 in Chemical education

1 answer 71 views

Question: A student wants to quantify the amount of iron (Fe) in a water sample using coulometry. The sample has a mass of 50.0 g and contains iron in the form of Fe(II) ions. The student sets up the electrochemical cell and begins the oxidation reaction, which requires a current of 16.0 A for 1200 s. What is the concentration of Fe(II) ions in the water sample in mol/L?

asked Jan 30 in Analytical Chemistry

1 answer 36 views

Ammonia and hydrochloric acid react to form ammonium chloride according to the equation: NH3(g) + HCl(g) ⇌ NH4Cl(s). If a student were to add 0.1 moles of NH4Cl to the mixture at equilibrium and the volume of the container is constant, what will be the new concentration of NH3(g) and HCl(g) in the mixture?

answered Jan 22 in Chemical equilibrium

1 answer 121 views

What is the pKa of the primary amine ethylamime if its pH in solution is 9.0?

asked Jan 21 in Organic Chemistry

1 answer 76 views

According to Seligman's learned helplessness theory, what happens when people feel they have no control over a situation?

answered Jan 20 in Psychology

1 answer 42 views

What is visual capture?

asked Jan 20 in Psychology

1 answer 60 views

Please evaluate the mere exposure effect.

asked Jan 20 in Psychology

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