A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?
-
A.
9.766 × 10-4 -
B.
1.736 ×10-3 -
C.
1.953 ×10-3 -
D.
3.472 × 10-3 -
E.
3.906 x 10-3
You May Also Like
The boys are communicating with each other by stretching a string passing through a hole…
The boys are communicating with each other by stretching a string passing through a hole punched in the…
An eruption pollution an environment with gas suspected to be H2S, a poisonous gas. A…
An eruption pollution an environment with gas suspected to be H2S, a poisonous gas. A residue team should…
A blue-green alga is not a protophyte because
A blue-green alga is not a protophyte because A. it is aquatic B. its cells are prokaryotic C.…
In the kidney of mammals, the site of ultrafiltration is the
In the kidney of mammals, the site of ultrafiltration is the A. uriniferous tubule B. Bowman’s capsule C.…
The atomic radius of Li, Na and K are 1: 33A, 1. 54A and 1….
The atomic radius of Li, Na and K are 1: 33A, 1. 54A and 1. 96A res pectively.…