What percentage of reactant will remains after 120 s if the half-life is 60 s?
What percentage of reactant will remains after 120 s if the half-life is 60 s?
if a reactant has a half life of 20 minutes, what percentage of it will remain after 80 minutes? please explain in details how to solve this problem.
The half-life of a certain radioactive element is about 1000 years. After 3500 years, what percentage P of a sample of this element remains ? About % of the sample remains. (Round to the nearest tenth as needed.)
The half-life of a reaction, t1/2, is the time it takes for the reactant concentration [A] to decrease by half. For example, after one half-life the concentration falls from the initial concentration [A]0 to [A]0/2, after a second half-life to [A]0/4, after a third half-life to [A]0/8, and so on. on. 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=0.693k For a...
A The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remains after 6.55 years? 0.837 B. 3.23 x 10-15 OC. 4.779 OD. 1.588 E. 1.163
91. If the half – life of a sample of radioactive material is 60 days, what fraction of the original radioactive nuclei will remain after 120 days.
A reactant decomposes with a half-life of 11.5 s when its initial concentration is 0.150 M. When the initial concentration is 0.875 M, this same reactant decomposes with a half-life of 67.1 s. What is the order of this reaction? What is the value and unit of the rate constant for this reaction?
A reactant decomposes with a half-life of 48.3 s when its initial concentration is 0.118 M. When the initial concentration is 0.240 M, this same reactant decomposes with a half-life of 98.3 s. What is the order of the reaction? 01 O2 00 What is the value and unit of the rate constant for this reaction? Unit: M-s-1
A reactant decomposes with a half-life of 167 s when its initial concentration is 0.301 M. When the initial concentration is 0.661 M, this same reactant decomposes with the same half-life of 167 s. What is the value and unit of the rate constant for this reaction? What is the order of the reaction? K=? also k =0.00475 s-1 is not the answer
A reactant decomposes with a half-life of 35.1 s when its initial concentration is 0.359 M. When the initial concentration is 0.733 M, this same reactant decomposes with a half‑life of 71.7 s. What is the order of the reaction? 1 2 0 What is the value and unit of the rate constant for this reaction? ?= Unit:
A reactant decomposes with a half-life of 131 s when its initial concentration is 0.269 M. When the initial concentration is 0.755 M, this same reactant decomposes with the same half-life of 131 s. What is the order of the reaction? 0 wnat is the value and unit of the rate constant for this reaction? Number