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Consider the chemical reaction A(g) + B(g) ↔ 2C(g). At equilibrium, the concentration of A is 0.25 M, the concentration of B is 0.15 M, and the concentration of C is 0.40 M. What is the equilibrium constant for this reaction at the given temperature?

asked Feb 3 in Chemical equilibrium by DomingoMarce (430 points)

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How does changing the temperature affect the conformation of a polymer chain in a Monte Carlo simulation?

asked Feb 3 in Computational Chemistry by ArlenRosetta (350 points)

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How does changing the pH affect the equilibrium constant (Kf) for the formation of Fe(CN)6 4- complex ion in a solution containing Fe3+ and CN- ions? Provide a detailed explanation of the effect of pH on the equilibrium constant for the reaction.

asked Feb 3 in Chemical equilibrium by IQELynette76 (230 points)

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What is the effect of changing the concentration of reactants and products on the equilibrium constant and reaction rate of a chemical reaction?

asked Feb 3 in Chemical kinetics by PeteHalpern (570 points)

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How does changing the molecular weight of polyethylene affect its mechanical properties, specifically in terms of its use as a biomaterial for joint replacements?

asked Feb 3 in Materials Chemistry by FredAfford68 (310 points)

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Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid and sodium hydroxide, given the balanced chemical equation: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) and the enthalpy change of formation values: ∆Hf°(NaCl(aq)) = -407.3 kJ/mol ∆Hf°(H2O(l)) = -285.83 kJ/mol ∆Hf°(HCl(aq)) = -167.2 kJ/mol ∆Hf°(NaOH(aq)) = -469.11 kJ/mol

asked Feb 3 in Chemical thermodynamics by ArdenQpv8725 (470 points)

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Calculate the standard enthalpy change for the vaporization of 1 mole of water at 100°C and 1 atm pressure. The enthalpy of formation of liquid water is -285.8 kJ/mol and the enthalpy of formation of water vapor is -241.8 kJ/mol.

asked Feb 3 in Chemical thermodynamics by JacquelynP76 (370 points)

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How does changing the mass of the atoms in a molecule affect its vibrational frequencies and infrared spectra, and how can quantum chemistry calculations be used to predict these changes?

asked Feb 3 in Quantum Chemistry by LKVVirgie254 (470 points)

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How does changing the concentration of reactants affect the reaction rate in the chemical reaction between hydrochloric acid and magnesium?

asked Feb 3 in Chemical kinetics by GQABrian353 (450 points)

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Calculate the rate constant at 300 K for a gas phase reaction with a rate of 0.025 M/s and an initial concentration of 0.10 M. The reaction is second order in the concentration of reactants.

asked Feb 3 in Physical Chemistry by HamishWrench (350 points)

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Calculate the standard enthalpy change (∆H°) for the neutralization reaction of 50.0 mL of 0.100 M HCl with 75.0 mL of 0.0750 M NaOH at a constant pressure of 1 atm and a temperature of 25°C.

asked Feb 3 in Chemical thermodynamics by EthelGrissom (430 points)

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Calculate the reaction quotient, Qc, for the following reaction:2NO2(g) + 7H2(g) → 2NH3(g) + 4H2O(g)at a temperature of 300 K and a pressure of 0.5 atm for each gas species. The equilibrium constants, Kc, at the same temperature and pressure are:Kc = 0.0080 for the reverse reactionKc = 7.2 × 10^-7 for the forward reaction

asked Feb 3 in Chemical thermodynamics by JGPKathy4544 (370 points)

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1 answer 9 views

Calculate the power output of a galvanic cell given that the cell potential is 1.8 V and the current passing through the circuit is 2.5 A. The electrochemical reaction taking place in the cell is the oxidation of Zinc and reduction of Copper. The standard reduction potentials are +0.76 V for copper and -0.76 V for zinc. The concentration of Zinc ions is 1.0 M whereas Copper ions concentration is 0.1 M. Determine the power output of the cell.

asked Feb 3 in ElectroChemistry by TiaPritt9171 (90 points)

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Calculate the percent composition of phosphoric acid, H3PO4.

asked Feb 3 in Inorganic Chemistry by Rhea03G2525 (230 points)

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How does changing the reactant concentration affect the efficiency of the reaction of hydrogen peroxide decomposition catalyzed by manganese dioxide?

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

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How does changing the pH of a solution affect the equilibrium position of an acid-base reaction, and what factors influence this effect? Provide examples of acid-base equilibria and their changes in equilibrium position with changes in pH.

asked Feb 3 in Chemical equilibrium by RogelioMacar (490 points)

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How does changing the concentration of reactants affect the reaction rate and the yield of products in the reaction between sodium thiosulphate and hydrochloric acid, and what is the optimal concentration of reactants to achieve the highest yield?

asked Feb 3 in Chemical kinetics by Eve05U16134 (330 points)

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1 answer 92 views

What are the photochemical properties that allow bioluminescent organisms to produce light, and how could this knowledge be applied in the development of new imaging technologies?

asked Jan 31 in PhotoChemistry by ShadPilkingt (330 points)

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1 answer 87 views

What are the key structural features of cancer cells that can be targeted by drugs in order to selectively kill them, and how can medicinal chemists optimize the design of such drugs to increase their efficacy and minimize their side effects?

asked Jan 31 in Medicinal Chemistry by DorrisCheath (390 points)

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1 answer 83 views

How do changes in the electronic structure of a molecule affect its magnetic properties and how can these changes be quantitatively calculated using quantum chemistry calculations? Specifically, investigate how the presence or absence of unpaired electrons in a molecule influences its magnetic susceptibility and how this can be predicted using theoretical models.

asked Jan 31 in Quantum Chemistry by EmanuelBrier (350 points)

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