If there are 8.00 g of a reactant at the beginning of a reaction, what fraction remains after 3 half lives? to 16 1/8 1/4 1/3

Q: which has a rate constant, k = 2.95 X 103 s. What percent of A remains after 150 s ?

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Q: estion 22 Complete the following statement by choosing one of the pull down answers for the first…

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Q: A substance undergoes first-order decomposition. After 45 min at 500°C, only 12.5% of the original…

A: A substance undergoes first order reaction.  Time = 45 min  Temperature = 500 °C  Original sample…

Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 15.0% of…

A: Rate constant is 9.05×10-4 s-1 Let consider Initial concentration = 100 M Final concentration = 100…

Q: 10. Consider the reaction: Co - Ni + °e -1 This reaction has a half-life of 5.271 ycars. Supposc a…

A: 2760Co →2860Ni + -10e Nuclear disintegration follows first order kinetics  λ=2.303 log(A0/A)/t…

Q: The chemical reaction shown was performed and the concentration of HCl was measured over time. Cl,…

A: This question belong to chemical kinetics that is Rate or Velocity of reaction. We know that, Rate…

Q: A reaction has a rate constant of 0.00205 s–1. What is the half-life (in min to two decimal places)…

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Q: Q3) For the reaction A P, the following results are obtained: CAo (mol/lit) 0.5 2 t2 (hr) 1.0 0.435…

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Q: In the reaction A→products, the initial concentration of A is 0.1867 M and 44 s later, 0.1832 M.…

A: Interpretation: In the reaction A→products, the initial concentration of A is 0.1867 M and 44 s…

Q: Consider the reaction A + B 4C, if the rate of disappearance of A is 0.2 mol/min, what is the rate…

A: Rate of the reaction is defined as the rate of change of concentration of reactants or products at a…

Q: How many half-lives are required for the concentration of reactant to decrease to 12.5% of its…

A: Given,

Q: For the reaction of reactant A convert to products, successive half-lives are observed to be…

A: Half-life in this context is defined as the time needed to observe the halving of the original…

Q: How many half-lives will it take for the concentration of the N20 to reach 25.00 % of its original…

A: Given: The reaction is a first-order reaction. And the final concentration of reactant N2O (Assuming…

Q: The first three half-lives of a chemical reaction are as follows: 44min, 22 min, 11min. What is the…

A: Below attached file showing the details answer.  All the best .

Q: A substance undergoes first-order decomposition. After 36 min at 500°C, only 12.5% of the original…

A: When a substance remains only 50℅ in a period, that period is known as the half-life of that…

Q: How many half-lives are required for the concentration of reactant to decrease to 3.1% of its…

A: We have to calculate the number of half lives required to decrease concentration to 3.1% of its…

Q: How many half-lives are required for the concentration of reactant to decrease to 25% of its…

A: Given:Let the initial concentration be=N∘Final concentration= 25% of initial…

Q: A reaction has a constant half-life of 250 s. How long will it take for the reactant concentration…

A: Given: Reaction is having a constant half-life of 250 s. And to find the time required for the…

Q: 4. Based on the graph, what is the approximate half-life of the reaction shown below? Concentration…

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Q: A possible reaction for the degradation of the pesticide DDT to a less harmful compound was…

A: Consider the given information is as follows; Order of the reaction = 1 (First order)         Rate…

Q: Write the rate for the following reaction in terms of: 2HC1(g) → H2(g) + Cl2(g) (а) НCI (b) Н2 (ag)

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Q: A Zero-order decomposition reaction of a substance took 4 minutes to achieve 30%  decomposition.…

A: Given, A Zero-order decomposition reaction of a substance took 4 minutes to achieve 30%…

Q: 5 3 6 18 : 20 10: For the following reaction, use the plots below and the information on them to…

A: The explanation is given below-

Q: The decomposition of dimethylether at 504 °C is first order with a half-life of 1570 seconds. What…

A: Givent1/2 = 1570 sOrder of reaction = 1k * t1/2 = 0.693k = 0.693t1/2k = 0.6931570 sk = 4.415 * 10-4…

Q: For the reaction                         2 C2H4(g) + 6 O2(g)  →  4 CO2(g) + 4 H2O(l) the C2H4…

A: rate of reation for above equation is r=-12d[C2H4]dt=-16d[O2]dt=14d[CO2]dt=14d[H2O]dt

Q: For a reaction: , [A]0 = 4.2 M, and the first two half-lives are 56 and 28 minutes, respectively.…

A: Given : [A]0 = 4.2 M First half life of reaction = 56 min. And second half life = 28 mins.

Q: A reaction has a rate constant, k = 0.0379 M/min. What is the half-life (minutes) when the initial…

A: Rate constant, k = 0.0379 M/min.  Initial concentration = 1.38 M  Half life time (in minutes) = ?

Q: 2. When the temperature of a reaction is increased, the rate of reaction will inerease because... A.…

A: The rate of the formation of the product or the rate of disappearance of the reactants is known as…

Q: For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for…

A: For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for…

Q: The tabulated data shows the concentration of N2O5 versus time for the reaction: N2O5=NO3+NO2…

A: The values of ln([N2O5]/M) and (1/[N2O5])/M versus time t of given reaction is given as,

Q: A very toxic yellow gas that decomposes slowly to NO and Cl2 according to:  NOCl (g) → NO (g) + Cl2…

A: Slope = 0.035 M-1 s-1  Initial concentration of NOCl = 0.030 M time = 15 min     ....Or  because 1…

Q: In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g) % H2(g) + ½…

A: Find the solution below:

Q: What is half-life period of a reaction?

A: A reaction consists of reactants and there is the formation of products.

Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 21.0% of…

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Q: Y Part A How many half-lives are required for the concentration of reactant to decrease to 25% of…

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Q: 4. A Zero-order decomposition reaction of a substance took 5 minutes to achieve 80% decomposition.…

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Q: Write the rate for the following reaction in terms of: 2HCI(g) → H2(g) + Cl2(g) (а) НC! (b) Н2

A: Rate of the reaction is defined as the change in the concentration of reactants or products per unit…

Q: For the given generic reaction, the concentration of A and the amount of time that is required to…

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Q: 2. Given the following steps for a mechanism: Step 1: HOOH + I - HOI + OH (slow) Step 2: HOI + I + ,…

A: The multipstep reaction includes more than one step.  One is slowest step which is rate determining…

Q: A first order reaction takes 20 minutes for 25% decomposition. Calculate the time when 75% of the…

A: The given data contains, The time required for 25% completion of reaction is 20 minutes. A=25A0=100

Q: When initial concentration of a reactant is doubled in a reaction, its half-life period is not…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: What is the half-life (seconds) of a reaction that has a rate constant, k = 0.00554 M/s where the…

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Q: der reaction is 45% complete at the end of 76 minutes. What is the length of the half-life of this…

A: Given -> Time(t) = 76 minutes -> first order reaction complete 45% .

Q: A substance undergoes first-order decomposition. After 37 min at 500°C, only 12.5% of the original…

A: The integrated rate equation for first order reaction is  k = 2.303tlog[R]o[R] k = rate constant t =…

Q: If the order with respect to a reactant is 1, when you double the concentration what happens to the…

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Q: A first-0order reaction has a half-life of 1.34 x 103 hours. If the initial concentration of…

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Q: How many half-lives are required for the concentration of reactant to decrease to 1.56% of its…

A: final concentration is 1.56 %  So, initial concentration will be 100 %

Q: HI(g)½ H2(g) + ½ I2(g) the following data were obtained: [HI], M 0.573 0.287 0.144 7.20×10-2…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts of the…

Q: A substance undergoes first-order decomposition. After 53 min at 500°C, only 12.5% of the original…

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Q: What is the half-life of the reaction when you begin with an initial concentration of AB = 0.80 M?…

A: Half-life of a material is the time taken to decay half of the amount of that material.