A first order reaction has t1/2 = 13.0 s. How long, in s, does it take...
A first order reaction has t1/2 = 13.0 s. How long, in s, does it take for the reactant concentration to decrease to 1.30 % of its initial value ?
- A.
26
- B.
66
- C.
39
-
D. 81
- E.
53
Homework Answers
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A first order reaction has t1/2 = 13.0 s. How long,
in s, does it take...
A first-order reaction has a half-life of 20.8 s . How long does it take for...
A first-order reaction has a half-life of 20.8 s . How long does it take for the concentration of the reactant in the reaction to fall to one-fourth of its initial value?
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 4.80×10−4 s−1? b) What is the rate constant of a first-order reaction that takes 188 seconds for the reactant concentration to drop to half of its initial value? Express your answer with the appropriate units. c)A certain first-order reaction has a rate constant...
Half-life equation for first-order reactions: t1/2=0.693k t1/2=0.693k where t1/2t1/2 is the half-life in seconds (s)(s), and...
Half-life equation for first-order reactions: t1/2=0.693k t1/2=0.693k where t1/2t1/2 is the half-life in seconds (s)(s), and kk is the rate constant in inverse seconds (s−1)(s−1). Part A What is the half-life of a first-order reaction with a rate constant of 4.40×10−4 s−1 s−1? Express your answer with the appropriate units. View Available Hint(s) SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 9 attempts remaining Part B What is the rate constant of a first-order reaction that takes 244 secondsseconds for the reactant concentration...
1. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reacti...
1. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M? 2. A certain first order reaction has a rate constant of 0.036 min-1. How much of the reactant will remain if the reaction is run for 2.5 hours and the initial concentration of the reactant is 0.31 M? 3. The rate constant...
A C If the above reaction follows first order rate, how long does it take for...
A
C
If the above reaction follows first order rate, how long does it
take for 70% of the initial concentration of A to transform to C?
First order rate constant k = 0.0325 s-1.
D Question 7 2 pts How long (in hours) does it take for a first order...
D Question 7 2 pts How long (in hours) does it take for a first order reaction to go from 0.050 M to 0.010 M? Answer to three decimal places. k=2.42 (1/hr) Question 8 2 pts A second order reaction at 443°C has a k-30. with the units appropriate for a second order reaction. How much time (in minutes) does it take for the concentration of the reactant to drop from 0.010M to 0.0050 M? Answer to 1 decimal place.
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?
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528...
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528 mol/L and the half-life is 27.0 s. (a) Calculate the concentration of the reactant (in mol/L) 54.0 s after initiation of the reaction. moll (b) How long (in s) would it take for the concentration of the reactant to drop to one eighth its initial value? (e) How long (ins) would it take for the concentration of the reactant to drop to 0.0330 mol/L?...
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?
A certain reactant disappears by a first order reaction that has a rate constant K= 3.5x10^-3...
A
certain reactant disappears by a first order reaction that has a
rate constant K= 3.5x10^-3 s-1. If the initial concentration of the
reactant is 0.500 M , how long will it take for the concentration
to drop to
0.200 M ?
4. A certain reactant disappears by a first-order reaction that has a rate constant k=3.5 x 10 s. If the initial concentration of the reactant is 0.500 M, how long will it take for the concentration to drop...
A
C
If the above reaction follows first order rate, how long does it
take for 70% of the initial concentration of A to transform to C?
First order rate constant k = 0.0325 s-1.
D Question 7 2 pts How long (in hours) does it take for a first order reaction to go from 0.050 M to 0.010 M? Answer to three decimal places. k=2.42 (1/hr) Question 8 2 pts A second order reaction at 443°C has a k-30. with the units appropriate for a second order reaction. How much time (in minutes) does it take for the concentration of the reactant to drop from 0.010M to 0.0050 M? Answer to 1 decimal place.
Referen The initial concentration of the reactant in a first-order reaction A → products is 0.528 mol/L and the half-life is 27.0 s. (a) Calculate the concentration of the reactant (in mol/L) 54.0 s after initiation of the reaction. moll (b) How long (in s) would it take for the concentration of the reactant to drop to one eighth its initial value? (e) How long (ins) would it take for the concentration of the reactant to drop to 0.0330 mol/L?...
A
certain reactant disappears by a first order reaction that has a
rate constant K= 3.5x10^-3 s-1. If the initial concentration of the
reactant is 0.500 M , how long will it take for the concentration
to drop to
0.200 M ?
4. A certain reactant disappears by a first-order reaction that has a rate constant k=3.5 x 10 s. If the initial concentration of the reactant is 0.500 M, how long will it take for the concentration to drop...
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