Question

After 49.0 min, 29.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?

Answer #1

After 76.0 min, 31.0% of a compound has decomposed. What is the
half-life of this reaction assuming first-order kinetics?
?= min

After 58.0 min, 24.0% of a compound has decomposed. What is the
half-life of this reaction assuming first-order kinetics?

After 70.0 min, 20.0% of a compound has decomposed. What is the
half-life of this reaction assuming first-order kinetics?

After 66.0 min, 37.0% of a compound has decomposed. What is the
half-life of this reaction assuming first-order kinetics?

After 47.0 min, 20.0% of a compound has decomposed. What is the
half-life of this reaction assuming first-order kinetics?

13.What is the half-life in minutes of a compound if 75.0
percent of a given sample decomposes in 30.0 minutes? Assume
first-order kinetics.
The thermal decomposition of phosphine (PH3) into phosphorus and
molecular hydrogen is a first-order reaction: 4PH3(g) → P(g) +
6H2(g) The half-life of the reaction is 35.0 s at 680°C. Calculate
the first-order rate constant for the reaction: s−1 Calculate the
time required for 88.0 percent of the phosphine to decompose: s

The decomposition of A to B is a first-order reaction with a
half-life of 85.9 min when the initial concentration of A is 0.483
M: A → 2B How long will it take for this initial concentration of A
to decrease by 23.0%? PLEASE HURRY I DONT HAVE MUCH TIME TO ANSWER
THIS

in a first order decomposition reaction, 50.0% of a
compound decomposes in 15.0 min
(a) what is the rate constant of the reaction?
(b) how long does it take for 75.0% of the compound to
decompose

The rate constant for the first-order decomposition of
a compound A in the
reaction 2 A P is k, =3.56 x 10-7 s-1 at 25°C. What is the
half-life of A? What will be the
pressure, initially 33.0 kPa at (a) 50 s, (b) 20 min, (c) 20 h
after initiation of the reaction?

The decomposition of N2O to N2 and O2 is a first-order reaction.
At 730°C the half-life of the reaction is 3.58 × 103 min. If the
initial pressure of N2O is 4.50 atm at 730°C, calculate the total
gas pressure after one half-life. Assume that the volume remains
constant.

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