Areaction was run with an initial concentration of 0.15 m. the half-life at 800 k was determined to be 1.751×10-4 s. the value of the half-life is independent of the initial concentration of the reactant present. what is the value of the rate constant at 800 k?

3.95 x 10³ s⁻¹.

Explanation:

∵ The value of the half-life is independent of the initial concentration of the reactant present.

∴ The reaction is a first order reaction.

∴ k = ln2 / (t1/2) = 0.693 / (1.751 x 10⁻⁴ s) = 3.95 x 10³ s⁻¹.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.