laureleiolson
13.01.2021 •
Chemistry
A radioactive substance has a half-life of 5 million years. What is the age of a rock in which 25% of the original radioactive atoms remain
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Ответ:
The given information gives us the clue that deuterium and tritium react together. We need to find the balanced nuclear reaction of deuterium and tritium; however, first, let me explain you what deuterium and tritium are.
Deuterium and tritium are two isotopes of hydrogen having atomic mass of 2 and 3 respectively. Deuterium is represented by
, whereas tritium is written as 
.
When deuterium and tritium collide together, they form Helium atom, which is written as
, and also release energy (and shoot out one neutron).
Hence, the balanced nuclear reaction will be the following:
-i