Explain the statement, “King Tut is one of the first mummies to be scanned — in death, as in life ...”

Explain the statement: Half-life of polonium is 3.8 days.

This question has Statement I and Statement II. Of four choices given after the Statements choose the one that best describes two statements Statement-I : Half-life of a first order reaction does not depend on the initial concentration of the reactant. Statement-II t_(1/2)=(2.303log_10 2)/k

In a first-order reaction, the concentration of the reactant is reduced to 12.5% in one hour. Calculate its half-life.