Multiple Choice
The radioactive nuclide 63Ni decays by a first-order process via the emission of a beta particle.The 63Ni nuclide has a half-life of 100.years.How long will it take for 71% of 63Ni to decay?
A) 49.4 years
B) 21.4 years
C) 0.857 years
D) 178 years
E) 77.5 years
Correct Answer:

Verified
Correct Answer:
Verified
Q34: For the following reaction producing 1 mol
Q35: A proposed mechanism for the decomposition of
Q36: For the hypothetical reaction aA → products,the
Q37: The rate constant for a first-order reaction
Q38: Determine the molecularity of the following elementary
Q40: The reaction between selenous acid and the
Q41: In the Arrhenius equation,the symbol A is
Q42: One mechanism for the depletion of ozone
Q43: A rate constant for a particular reaction
Q44: A first-order chemical reaction is observed to