Related questions

Question

Tritium (3H) is used in glowing “EXIT” signs located where there is no electricity for lightbulbs. If the half-life of tritium is 12.26 years, what percentage of the original quantity of the isotope is left in the sign after 20.0 years? a.0.677%. d.32.3%. b.67.7%. e.25.0%. c.0.323%