Chemistry

After 62.0 min, 11.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?

  1. 👍 0
  2. 👎 0
  3. 👁 453
  1. ln(No/N) = kt
    No = 100
    N = 89
    t = 62 min
    solve for k.

    Then k = 0693/t1/2

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    IF 80mg of a radioactive element decays to 10mg in 30 minutes, the half-life of this element is a.10 min b.20 min c.30 min d.40 min the answer is a.10 min but i would like to know why, please help.

    asked by Jazmin on May 30, 2011
  2. Chemistry

    Which radioactive sample would contain the greatest remaining mass of the radioactive isotope after 10 years? A. 2.0 grams of 198 Au B. 2.0 grams of 42 K C. 4.0 grams of 32 P D. 4.0 grams of 60 Co By the way the numbers next to

    asked by Sanjay on March 3, 2007
  3. Chemistry

    In the reaction 2HgO(s) --> 2Hg(l) + O2(g) we measure the evolution of gas to determine the rate of reaction. At the beginning of the reaction (at 0 minutes), 0.02 L of O2 is present. After 20 minutes the volume of O2 is 0.36 L.

    asked by Tamera on November 5, 2014
  4. Chemistry

    In the gas-phase reaction given below, the [I2] changes from 0.400 M at 0.00 min to 0.200 M at 3.00 min. I2 + Cl2 --> 2 ICl Calculate the average reaction rate in moles I2 consumed per liter per minute. mol/(L·min)

    asked by Lionel on April 27, 2017
  5. chemistry

    For the decomposition of gaseous dinitrogen pentoxide (shownbelow), 2 N2O5(g).....> 4NO2(g) + O2(g) the rate constant is k = 2.8 10-3 s-1 at 60°C. The initial concentration of N2O5 is 1.52 mol/L. (a) What is [N2O5] after 5.00

    asked by sabrina on September 13, 2015
  1. Electrochem

    I have a table of standard potentials in water that gives a number of reactions and their e*reduction. Say I'm looking for the reaction Al(s) --> Al+3 + 3e-, but the book gives me the reaction Al+3 + 3e- --> Al(s) and a E*red

    asked by Kim on June 6, 2007
  2. Chemistry

    Calculate the rate constant, k, for the reaction 2H2O2(l) --> 2H2O(l) + O2(g) Using the rate, - 0.02 mol/L.min H2O2, and the initial concentration, [H2O2] = 0.5 mol/L Question 7 options: - 25/min 25/min - 0.04/min 0.04/min

    asked by Tamera on November 5, 2014
  3. chemistry

    If there are 80 milligrams of a radioactive element decays to 10 milligrams in 30 minutes then what is the elements half life in minutes? Ok i narrowed it down to either 10 or 30...but im rly confused so if u could help it wuld be

    asked by jojo on March 4, 2007
  4. Chemistry

    The half life for a first order reaction is know to be 4.5 h. How long will it take for 85% to be decomposed, in h?

    asked by Paige on December 7, 2011
  5. Chemistry

    In a first order decomposition reaction, 50% of a compound decomposes in 10.5 min. What is the rate constant of the reaction? How long does it take for 75% of the compound to decompose? My professor did this problem in class: k =

    asked by biggie on April 10, 2010
  6. Chemistry

    The rate of a first-order reaction is followed by spectroscopy, monitoring the absorption of a colored reactant at 520 nm . The reaction occurs in a 1.29-cm sample cell, and the only colored species in the reaction has an

    asked by Leslie on January 26, 2013

You can view more similar questions or ask a new question.