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How does changing the temperature affect the behavior of a polymer system composed of 1000 chains constructed from styrene monomers, as determined by Monte Carlo simulations, and how can this information be applied to design synthetic polymers with specific properties?

asked Feb 3 in Computational Chemistry by MirandaMacki (290 points)

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How does changing the concentration of reactants affect the reaction rate in a chemical reaction involving [product]? Use experiments and data analysis to support your answer.

asked Feb 3 in Chemical kinetics by LucianaMende (490 points)

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Calculate the standard enthalpy change (∆H°) for the dissolution of 5 grams of table salt (NaCl) in water at 298 kelvin. The molar mass of NaCl is 58.44 g/mol and the heat capacity of the solution is 4.18 J/gK.

asked Feb 3 in Chemical thermodynamics by KiraQ407043 (270 points)

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What is the effect of changing the concentration of reactants on the reaction rate of a chemical reaction and how does this impact the overall sustainability of the reaction?

asked Feb 3 in Chemical kinetics by Bradley53M38 (290 points)

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What is the effect of changing the concentration of reactants on the reaction rate and sustainability in a chemical reaction?

asked Feb 3 in Chemical kinetics by FawnContrera (390 points)

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How does changing the ratio of reactants in a chemical reaction affect the rate of the reaction? Specifically, what is the effect on reaction rate when the stoichiometric ratios of reactants are altered in the reaction between A and B to form product C?

asked Feb 3 in Chemical kinetics by PearlineBati (310 points)

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Considering the subtopic of the study of properties of ceramics for high-temperature applications, the problem for the chemistry student to solve could be:What are the specific material properties of ceramics that make them suitable for use in high-temperature applications, and how can these properties be optimized for various industrial or scientific purposes? What types of fabrication methods or processing techniques can be used to create ceramics with desired properties for specific high-temperature applications?

asked Feb 3 in Materials Chemistry by FrankMacdoug (530 points)

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How does changing the pressure of a reaction between hydrogen gas and iodine gas affect the rate of reaction, and how can this relationship be explained by collision theory?

asked Feb 3 in Chemical kinetics by ValorieDemar (310 points)

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Calculate the reaction quotient Q for the chemical reaction below using the given concentrations of reactants and products at a temperature of 25°C:2H2(g) + O2(g) -> 2H2O(g)[H2] = 0.10 M, [O2] = 0.05 M, [H2O] = 0.08 M.

asked Feb 3 in Chemical thermodynamics by Rex516068171 (370 points)

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Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol

asked Feb 3 in Chemical thermodynamics by OpheliaTuggl (190 points)

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Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

asked Feb 3 in Chemical reactions by ClariceOrozc (330 points)

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1 answer 26 views

How does changing the pH of a solution affect the equilibrium position of a redox reaction between copper and silver ions? Provide a detailed explanation with chemical equations and the relevant equilibrium constants.

asked Feb 3 in Chemical equilibrium by KristinaRubi (250 points)

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1 answer 26 views

How does changing the pH of a solution affect the equilibrium position of an acid-base reaction when starting with HF (hydrofluoric acid) and NaOH (sodium hydroxide)?

asked Feb 3 in Chemical equilibrium by RoyalLemons0 (590 points)

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How does changing the concentration of the reactants affect the equilibrium constant and the reaction rate of the reaction between iodine and propanone in acidic solution?

asked Feb 3 in Chemical kinetics by MoseTall8858 (430 points)

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What is the effect of changing the concentration of reactants on the equilibrium constant for a chemical reaction and how can it be measured experimentally?

asked Feb 3 in Chemical kinetics by Lucia66O534 (290 points)

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Design a chemical reactor for the production of 1000 kg per hour of ammonia through the Haber process, given a feedstock gas composition of nitrogen and hydrogen in a 3:1 molar ratio, and operating conditions of 450°C at 100 bar pressure. Determine the reactor size and necessary input flow rates of reactants, and identify any key design considerations that need to be taken into account.

asked Feb 3 in Chemical engineering by WendyMortens (370 points)

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1 answer 8 views

Considering the reaction: Zn(s) + Cu2+(aq) -> Cu(s) + Zn2+(aq) What is the cell potential (in volts) at 25°C when the concentrations of [Cu2+] and [Zn2+] are 0.5 M and 1.0 M, respectively, and the zinc electrode is the anode? The standard reduction potentials for Cu2+/Cu and Zn2+/Zn are 0.34 V and -0.76 V, respectively.

asked Feb 3 in ElectroChemistry by CharmainBirk (310 points)

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1 answer 8 views

Considering carbohydrate metabolism and regulation in the human body, how does the regulation of glycolysis and gluconeogenesis work to maintain blood glucose levels during periods of fasting or intense exercise? Include both the enzymes involved and the hormonal regulation mechanisms in your answer.

asked Feb 3 in BioChemistry by CaitlinMedra (350 points)

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1 answer 8 views

Considering a molecule with a known ground state configuration, how can one determine the electronic excited states and their corresponding optical properties using computational methods in quantum chemistry?

asked Feb 3 in Quantum Chemistry by RosalineStar (450 points)

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1 answer 8 views

Consider two coordination compounds, [Co(NH3)4Cl2] and [Co(NH3)5Cl] with the same formula weight but different physical properties. Explain the type of isomerism present in each compound, draw their structures and identify which compound exhibits optical isomerism.

asked Feb 3 in Coordination Chemistry by IrisLongo523 (670 points)

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