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What conditions are needed for the catalytic polymerization of ethylene monomers in order to obtain high molecular weight polyethylene?

asked Feb 13 in Chemical synthesis by RobertoLafla (2.4k points)

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What is the effect of doubling the concentration of reactant A on the initial rate of a second-order reaction having a rate constant of 0.002 M^-1s^-1 at a fixed concentration of reactant B?

asked Feb 13 in Chemical kinetics by RaulGalway75 (2.4k points)

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What is the rate constant of a second-order reaction if its concentration is 0.5 M and its half-life is 5 minutes?

asked Feb 13 in Chemical reactions by Carole803671 (2.0k points)

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What effect does varying the concentration of reactants have on the reaction rate for a reaction that follows a first-order reaction kinetics?

asked Feb 13 in Chemical kinetics by KennyWenz603 (2.2k points)

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What is the rate constant for the reaction: A + B → C if the concentration of A is 0.1 M, B is 0.2 M, and the initial rate of formation of C is 2.5 x 10^-3 M/s? (Assume the reaction follows first-order kinetics with respect to both A and B.)

asked Feb 13 in Chemical kinetics by LeeAlder0448 (2.1k points)

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What is the reaction rate constant for the reaction A + B → C if the initial concentration of A is 0.2 M, the initial concentration of B is 0.3 M, the initial rate of reaction is 0.1 M/s, and the reaction is of first order with respect to both A and B?

asked Feb 13 in Chemical reactions by CalvinHornin (2.4k points)

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What structural and electronic parameters are necessary for a metal ion to function as a cofactor in metalloenzymes and metalloproteins, and how do these factors affect the enzyme's catalytic activity?

asked Feb 13 in Coordination Chemistry by NamSampson2 (2.1k points)

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1 answer 54 views

What is the effect of changing the concentration of reactants on the reaction rate for a first-order reaction?

asked Feb 13 in Chemical kinetics by BarneyUyv133 (2.8k points)

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1 answer 38 views

What is the rate constant for the decomposition of 2.00 mol/L of hydrogen peroxide (H2O2) at 25°C, given that the reaction follows first-order kinetics and the rate of decomposition is 0.050 mol/L·s?

asked Feb 13 in Chemical kinetics by LethaWinfrey (2.4k points)

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1 answer 33 views

What is the rate constant for a first-order decomposition reaction if the half-life is 120 seconds and the initial concentration of the reactant is 0.02 M?

asked Feb 13 in Physical Chemistry by BarbraBelang (2.0k points)

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1 answer 31 views

What is the rate constant for a first-order reaction if the initial concentration of the reactant is 1.5 M and its concentration after 2 minutes is 0.75 M? The half-life of the reaction is 4 minutes.

asked Feb 13 in Chemical kinetics by Mose2866156 (2.4k points)

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What is the rate constant for the first order decomposition of hydrogen peroxide if the initial concentration of hydrogen peroxide is 0.1 M and 80% of the hydrogen peroxide decomposes in 5 minutes?

asked Feb 13 in Chemical kinetics by OnaSchnell25 (2.4k points)

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How can we use chemistry concepts and principles to explain the process of food spoilage and prevent it from happening in our daily lives?

asked Feb 13 in Chemical education by ConcettaAmse (2.1k points)

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How do fluctuations in temperature affect the release of volatile organic compounds (VOCs) from common household products and what is the impact of such emissions on air quality?

asked Feb 13 in Environmental Chemistry by ElmoMcColl39 (2.8k points)

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1 answer 36 views

What is the reaction mechanism and intermediate involved in the synthesis of ethyl acetate through Fischer esterification?

asked Feb 13 in Organic Chemistry by Juliana93U49 (2.4k points)

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What mass of silver chloride (AgCl) can be produced from the reaction between 50 mL of 0.1 M silver nitrate (AgNO3) and 100 mL of 0.2 M hydrochloric acid (HCl)? Also, determine which reactant is in excess and by how much.

asked Feb 13 in Chemical reactions by StephanieLeF (2.9k points)

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What is the total number of electrons transferred when a current of 2.0 A flows through a solution of CuSO4 for 15 minutes? Given that the molar mass of CuSO4 is 159.61 g/mol and the Faraday constant is 96,485 C/mol.

asked Feb 13 in ElectroChemistry by SterlingElki (3.1k points)

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1 answer 40 views

What is the amount of heat required to melt 10 g of ice at 0°C, given that the heat of fusion of water is 6.01 kJ/mol?

asked Feb 13 in ThermoChemistry by JacquelynDos (2.3k points)

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1 answer 34 views

What mass of sodium chloride (NaCl) would be produced from the reaction of 5.00 grams of sodium (Na) with an excess of chlorine (Cl2) gas, according to the following chemical equation: 2Na + Cl2 → 2NaCl

asked Feb 13 in Chemical reactions by Lettie458244 (2.6k points)

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What is the percent ionization of a 0.1 M solution of acetic acid (pKa = 4.76) at 25°C, if its ionization constant (Ka) changes to 1.32 x 10^-5 when the temperature is raised to 50°C?

asked Feb 13 in Chemical equilibrium by AhmadEho9450 (2.2k points)

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