Radioactive materials are often used in biological studies. A radiation biologist studies the rate of decomposition of a certain substance and obtains the following data: Time (days) 0 4.0 8.0 12.0 16.0 Mass (μg) 26.20 18.13 12.55 8.69 6.01 Determine the rate constant in units of days-1.

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: 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: What do you understand by the rate law and rate constant of a reaction? Identify the order of a…

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Q: Hydrogen peroxide decomposes with a rate constant of 1.8 x 10-5 s-1. How much of the reactant will…

A: The rate constant k is given as 1.8×10-5s-1 initial concentration of reactant = 0.64 M We have to…

Q: A reactant decomposes with a half-life of 47.9 s when its initial concentration is 0.325 M. When the…

A: Given: When the initial concentration is 0.325 M, the half-life = 47.9 s When the initial…

Q: A chemistry graduate student is studying the rate of this reaction: 2Cl,0, (g) → 2Cl, (g) + 50, (g)…

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Q: A substance decomposes with a rate constant of 9.05 × 104 s1. How long does it take for 10.5% of the…

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Q: in a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)% H2(g) +½ I½(g)…

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Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 18.5% of…

A: When 18.5% of the substance decomposed then amount of substance left at time, t is [R] = [R]0 -…

Q: Consider the data showing the initial rate of a reaction (A=products) at several different…

A: Rate law:  The mathematical equation that relates the concentrations of the reactants to the rate of…

Q: The hydrolysis of table sugar (sucrose) occurs by the following overall reaction sucrose + water →…

A: HYDROLYSIS: A chemical reaction in which chemical bonds in water molecules are cleaved to form one…

Q: A graph of 1/[A] versus time was prepared. The equation as a best straight line through these points…

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Q: Radioactive decay is a first order reaction. The specific rate constant,k, for radioactive decay of…

A: Given information: Rate constant = 0.0495/s Time = 28 s Initial amount of sample = 0.500 mg

Q: A chemical reaction that is first order in X is observed to have a rate constant of 2.1 x 10-25-1.…

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Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 14.0% of…

A: Given that ,  Rate constant (k) for decomposition reaction of a substance is 9.05 × 10⁻⁴ s⁻¹. Time…

Q: In a study of the decomposition of nitrous oxide at 565 °C N2O(g)N2(g) + ½ O2(g) the concentration…

A: The rate of the reaction is directly proportional to the concentration of the reactant. So when…

Q: A reaction has a rate constant of 1.27×10−4 s−1 at 28 Celsius and 0.234 s−1 at 79 Celsius. What is…

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Q: A reactant decomposes with a half-life of 115 s when its initial concentration is 0.289 M. When the…

A: Lets A is reactant Given that :  Half life (t1/2) when( [A]0 = 0.289M ) = 115s  When [A]0 = 0.550,…

Q: Give the overall reaction order that corresponds to a rate constant with each of the following…

A: Rate law of a reaction is equal to the product of the reactants raised to some power. The sum of the…

Q: Part A The rate of the reaction in terms of the "disappearance of reactant" includes the change in…

A: Since the molecules of A is getting consumed in the reaction Hence the rate of disappearance will be…

Q: ance decomposes at 600 K with a rate constant of 2.37 x 10 s. Calcu me reaction. 9 hour 6,8.12 hour…

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Q: The enzyme fumarase catalyzes the formation of malate from fumarate, which is critical for cellular…

A: We are given value of rate constant in presence and absence of catalyst fumarase  We have to find…

Q: In a study of the decomposition of nitrous oxide at 565 °C N20(g)N2(g) + ½ 02(g) the concentration…

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Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 25.5% of…

A: The given data contains, rate constant = 9.05×10-4s-1

Q: The decomposition of B follows the rate law rate = 7.22 x 10−3 M/s. Which equation would be used to…

A: Rate = 7.22 × 10-3 M/s Initial concentration = 0.438 M Time = 60 s Concentration after 60 s = ?

Q: (Q85) The tabulated data for a decomposition reaction that occurred at a certain temperature was…

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Q: In the decomposition of nitrogen pentoxide in the gaseous state at 35°C, Daniels and  Johnston found…

A: The fractions of nitrogen pentoxide decomposed at various periods of time to be as follows : Time…

Q: A particular reactant decomposes with a half‑life of 163 s when its initial concentration is 0.281…

A: Half-life time defines the state at which any reaction gets completed by 50%. It is the required…

Q: 1. Hydrogen peroxide decomposes in the presence of iodide ion. The reaction is: 2H,0,(aq) Using the…

A: Given Concentration of H2O2 (M)                        Rate ( M min-1) C1  = 0.1…

Q: Consider the initial-rate data at a certain temperature in the table for the reaction described by…

A: The blanced chemical equation : 2NO2(g) + O3 (g) → N2O5 (g) +O2 (g) the rate constant k = ?

Q: Using the information in the table, the rate law for the reaction A(g) + 3 B(g) → C(g) + 2 D(g) is

A: The order of the reaction with respect to B is determined as follows.…

Q: The thiosulfate ion (S,O3-) is oxidized by iodine as follows: 25,032(aq) + I5(aq) S406(aq) + 21(aq)…

A: The rate of consumption if thiosulphate ion can be calculated by dividing consumed amount by change…

Q: The initial rate of decomposition of acetaldehyde CH; CHO → CH+ CO Was measured at a series of…

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Q: Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of…

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Q: Sugar decomposes in acidic solution to its two components, glucose and fructose. The reaction is…

A: First-order reaction:According to the first-order kinetics the rate constant of the first-order…

Q: Consider the reaction A + 2B à C The rate law for this reaction is second order in A and second…

A: Rate of a reaction is the speed at which the reaction proceeds or the reactants getting converted…

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: In a study of the gas phase decomposition of hydrogen iodide at 700 K HI(g) →½ H₂(g) + ½ I₂(g) the…

A: Given reaction: HI(g) → 12 H2(g) + 12 I2(g) The slope of the plot of 1/[HI] versus time in seconds…

Q: Consider the reaction A ⟶Products Use the following rate data to determine the order of the reaction…

A: Rate expression fort he given reaction is shown below where r is the rate of the reaction, k is the…

Q: The hydrolysis of table sugar (sucrose) occurs by the following overall reaction sucrose + water →…

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Q: An Arrhenius Plot gives a line with the equation y = -9020x + 32.24. At a temperature of 25 C, what…

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Q: A substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 23.0% of…

A: We have to find time for 23% decomposition

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

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Q: A substance decomposes with a rate constant of 9.05 × 104 s1. How long does it take for 17.0% of the…

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Q: The decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)% H,(g) + % »(9) is zero order…

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Q: Define activation energy Calculate the activation energy for a first order reaction, given that the…

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Q: The rate constant for the decomposition of HI(g) forming 2(g) and H2(g) at 700 °C was found to be…

A: '

Q: substance decomposes with a rate constant of 9.05 × 10⁻⁴ s⁻¹. How long does it take for 24.5% of the…

A: Using basics of first order of reaction to calculate the time required.

Q: A particular reactant decomposes with a half-life of 121 s when its initial concentration is 0.264…

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