00:01
This question asks us to take a look at balancing a nuclear reaction and the energy released from that reaction.
00:07
So we're told that we have a certain mass of a boron 8 and that it releases a positron particle and forms a beryllium 8 as the daughter particle.
00:18
So if we're going to look at the balanced nuclear reaction here, we'd start with our parent as the boron 8.
00:24
The positron is one of the products of the reaction.
00:27
And then that beryllium 8 is the daughter particle that's formed here.
00:31
Now we know this from a nuclear reaction that the energy released can be calculated based on a version of einstein's theory of relativity that says e equals mc squared or in terms of nuclear chemistry.
00:46
We can determine the energy released in a nuclear reaction based on the mass lost as we just made my delta sign disappear.
00:57
There we go.
00:59
The mass lost as we undergo a nuclear reaction times the speed of light squared.
01:04
So initially here we need to find how much mass was lost as we formed this daughter particle.
01:11
So we take the masses that were provided for both the beryllium and the positron particles and total them together and get total mass of the product particles here is 8 .0058 amus.
01:23
And they tell us in the question that the initial mass of my parent particle is 8 .0246...