Question

If the rate constant for a first order reaction
is k, the time (t) required for the completion
of 99% of the reaction is given by:

Answer 1

$\huge{\mathfrak{HEYA\:MATE\:!!}}$

please refer to the attachment

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Answer 2

K=2.303/tlog10^2

K=2.303/tx2log10

t=2.303/kx2

t=4.606/k