HomeworkLib
Question

A decomposition reaction has a rate constant of 0.0012 yr?^-1 (a) What is the half-life of...

A decomposition reaction has a rate constant of 0.0012 yr?^-1 (a) What is the half-life of the reaction? (b) How long does it take for [reactant] to reach 12.5% of its original value?

Please explain step by step, I am confused on how to solve part B mostly! How do you rearrange the formulas to get the answer??

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
A decomposition reaction has a rate constant of 0.0012 yr?^-1 (a) What is the half-life of...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • For a first-order reaction, the half-life is constant. It depends only on the rate constant k...

    For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t1/2=0.693kt1/2=0.693k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0 Part A. A certain first-order reaction (A→products) has a rate constant of 3.00×10−3 s−1 at 45 ∘C∘C. How many minutes does it take for the concentration of the reactant, [A],...

  • For a first-order reaction, the half-life is constant. It depends only on the rate constant k...

    For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t 1/2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t 1/2 = 1 k[A ] 0 Part A A certain first-order reaction ( A→products ) has a rate constant of 9.90×10−3 s −1 at 45 ∘...

  • For a first-order reaction, the half-life is constant. It depends only on the rate constant k...

    For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as 0.693 - 1/2K For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as 1/2 k(Alo Part A A certain first-order reaction (A>products) has a rate constant of 9.60x10 s-1 at45 C. How many minutes does it take for the concentration of the...

  • For a first-order reaction, the half-life is constant. It depends only on the rate constant k...

    For a first-order reaction, the half-life is constant. It depends only on the rate constant k k and not on the reactant concentration. It is expressed as t1/2=0.693k t 1 / 2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0. A certain first-order reaction (A→products A → p r o d u c t s ) has a rate constant of 9.30×10−3...

  • 2. Answer the following questions by connecting the half-life of each first-order reaction to the rate...

    2. Answer the following questions by connecting the half-life of each first-order reaction to the rate constant. a. The rate constant of a first-order reaction is 2.43 × 10–2 min–1. What is the half-life of the reaction? (2 points) b. A first-order reaction has a rate constant of 0.547 min-1. How long will it take a reactant concentration 0.14 M to decrease to 0.07 M? (2 points) c. The half-life of a first-order reaction is 5.47 min. What is the...

  • 1. What is the half-life of a first-order reaction with a rate constant of 1.90×10−4  s−1? Express...

    1. What is the half-life of a first-order reaction with a rate constant of 1.90×10−4  s−1? Express your answer with the appropriate units. 2. What is the rate constant of a first-order reaction that takes 244 seconds for the reactant concentration to drop to half of its initial value? 3. A certain first-order reaction has a rate constant of 1.80×10−3 s−1. How long will it take for the reactant concentration to drop to 18 of its initial value?

  • Part A. A certain first-order reaction (A→products) has a rate constant of 3.90×10−3 s−1 at 45...

    Part A. A certain first-order reaction (A→products) has a rate constant of 3.90×10−3 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? Part B. A certain second-order reaction (B→products) has a rate constant of 1.90×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 298 s . What is the concentration of the reactant B after one half-life?

  • Part A: A certain first-order reaction (A→products) has a rate constant of 6.30×10−3 s−1 at 45...

    Part A: A certain first-order reaction (A→products) has a rate constant of 6.30×10−3 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? Part B: A certain second-order reaction (B→products) has a rate constant of 1.30×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 264 s . What is the concentration of the reactant B after one half-life?

  • The decomposition of XY is second order in XYand has a rate constant of 7.12×10−3 M−1⋅s−1...

    The decomposition of XY is second order in XYand has a rate constant of 7.12×10−3 M−1⋅s−1 at a certain temperature. What is the half-life for this reaction at an initial concentration of 0.100 M? How long will it take for the concentration of XY to decrease to 12.5% of its initial concentration when the initial concentration is 0.100 M? How long will it take for the concentration of XY to decrease to 12.5% of its initial concentration when the initial...

  • The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3...

    The decomposition of XY is second order in XY and has a rate constant of 7.06×10−3 M−1⋅s−1 at a certain temperature. a) What is the half-life for this reaction at an initial concentration of 0.100 MM? b)How long will it take for the concentration of XYXY to decrease to 12.5%% of its initial concentration when the initial concentration is 0.100 MM? c)How long will it take for the concentration of XYXY to decrease to 12.5% of its initial concentration when...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT