Multiple Choice
The half-life for the spontaneous decay of technetium-99m is 6.0 hours.How much of a 0.20 g sample of this isotope remains after 4.5 hours?
A) 0.05 g
B) 0.08 g
C) 0.12 g
D) 0.15 g
E) 0.20 g
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q50: Strontium-90 is produced in nuclear fission reactors.If
Q51: The symbol Nb stands for the element
Q52: <sup>15</sup>N and <sup>15</sup>O are isotopes.
Q53: Write the symbol for manganese: _
Q54: In boron neutron capture therapy (BNCT),boron-10 is
Q56: How many nitrogen atoms are indicated by
Q57: Write the symbol for carbon._
Q58: Which of the following is the most
Q59: Write the symbol for lead._
Q60: The chemical formula Ga<sub>2</sub>O<sub>3</sub> indicates<br>A) two atoms