The half-life of a reaction, t1/2, is the time required for one-half of a reactant to...

The half-life of a reaction, t1/2, is the time required for one-half of a reactant to be consumed. It is the time during which the amount of reactant or its concentration decreases to one-half of its initial value.Determine the half-life for the reaction in Part B using the integrated rate law, given that the initial concentration is 1.95 mol⋅L−1 and the rate constant is 0.0019 mol⋅L−1⋅s−1

Expert Solution

queen_honey_blossom answered 2 years ago

Half-life equation for first-order reactions: t1/2=0.693k where t1/2 is the half-life in seconds (s), and k...

Half-life equation for first-order reactions: t1/2=0.693k where t1/2 is the half-life in seconds (s), and k is the rate constant in inverse seconds (s−1). A. What is the half-life of a first-order reaction with a rate constant of 5.60×10−4 s−1? B. What is the rate constant of a first-order reaction that takes 150 seconds for the reactant concentration to drop to half of its initial value? C. A certain first-order reaction has a rate constant of 7.20×10−3 s−1. How long...

Suppose the half-life is 55.0 s for a first order reaction and the reactant concentration is...

Suppose the half-life is 55.0 s for a first order reaction and the reactant concentration is 0.0761 M 40.1 s after the reaction starts. How many seconds after the start of the reaction does it take for the reactant concentration to decrease to 0.0183 M?

What is the half-life (T1/2) of a radioactive element with the following conditions? -Initial Activity =...

What is the half-life (T1/2) of a radioactive element with the following conditions? -Initial Activity = 1000 milliCuries -Final Activity = 400 milliCuries -Elapsed Time= 20.0 days

1. If drug X has a half-life (T1/2) of 2 days (48 hours) and the concentration...

1. If drug X has a half-life (T1/2) of 2 days (48 hours) and the concentration at 12:00 today was 10 μg/mL, what would the expected concentration of drug X be at 12:00 tomorrow? a. 7 μg/mL b. 7.5 μg/mL c. 5 μg/mL d. 3.5 μg/mL 2. If a drug is administered orally, which of the following would affect the efficiency of its absorption in the gastrointestinal tract? a. Dissociation of the drug from its administered form b. The drug's...

A sample contains 30MBq of 201Pb (half-life time:22years) and 15MBq of 210Bi (half-life time : 5...

A sample contains 30MBq of 201Pb (half-life time:22years) and 15MBq of 210Bi (half-life time : 5 days) at time t=0. 1) calculate the activity of 210Bi at time t=10days 2) if the sample originally pure 201Pb, then how old is it at a time t=0

1) Calculate the half-life with respect to crystal violet of reaction 2 for tube C at...

1) Calculate the half-life with respect to crystal violet of reaction 2 for tube C at room temperature (report the temperature value). T = 21 C --> 294 K the reaction is first order I'm not sure what else I need to answer this question

A reactant decomposes with a half-life of 153 s when its initial concentration is 0.269 M....

A reactant decomposes with a half-life of 153 s when its initial concentration is 0.269 M. When the initial concentration is 0.568 M, this same reactant decomposes with the same half-life of 153 s. It is a first order reaction. I am unsure how to do this. SOS

A particular reactant decomposes with a half-life of 119 s when its initial concentration is 0.324...

A particular reactant decomposes with a half-life of 119 s when its initial concentration is 0.324 M. The same reactant decomposes with a half-life of 233 s when its initial concentration is 0.165 M. Determine the reaction order? What is the value and unit of the rate constant for this reaction?

1)Calculate the half-life with respect to crystal violet of reaction 2 for tube C at room...

1)Calculate the half-life with respect to crystal violet of reaction 2 for tube C at room temperature (report the temperature value). Reaction 2: CV(aq) + OH-(aq) --> CVOH(aq) tube c at temperature 21.5 = concentration of tube c is 0.040M OH- Zero Order First Order Second Order (M) correlation slope correlation slope correlation slope 0.200 0.91853 -0.00000002 0.99963 -0.0105 0.89805 7061.9 0.100 0.95919 -0.00000003 0.99891 -0.0063 0.92837 1633 (c)0.040 0.99464 -0.00000002 0.9998 -0.0022 0.99051 248.88

The half-life of a radioactive isotope represents the average time it would take half of a...

The half-life of a radioactive isotope represents the average time it would take half of a collection of this type of nucleus to decay. For example, you start with a sample of 1000 Oxygen-15 (15O) nuclei, which has a half-life of 122 seconds. After 122 seconds, half of the 15O nuclei will have decayed into Nitrogen-15 (15N) nuclei. After another 122s, half of the remaining Oxygen nuclei will have also decayed, and so on. Suppose you start with 3.71×10315O nuclei...

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