Answer:
Two half lives.
Explanation:
It is known that the decay of isotopes and radioactive material obeys first order kinetics.
Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
That means for a sample 100% to decay to 50 % it will take one half-life, and to decay the remaining 50% to 25% it will take another half-life.
So, for a sample has 25% parent and 75% daughter it will have two half-lives.
I'm pretty sure that it's either 83.2% or 91.4%
Answer:
1.Nuclear fusion.
2.Out of fuel.
3.Fusion stops temperature drops.
4.Core contracts (gravity pulling atoms in).
5.Increased temperature (more atoms, more collisions) and density in the core reinitiates nuclear fusion, equilibrium is achieved, and the cycle begins again at step 1.
Explanation:
Answer:
C) 7 to 1
Explanation:
The periodic trend of Atomic Radii for the Periodic Table of Elements is down and to the left the atomic radii increases.
So, from period 1 to 7 and group 18 to group 1, the atomic radii increases.
The opposite (decreasing) would be from period 7 to 1 and group 1 to group 18.
Therefore, our answer is C.
C to know the background knowledge on how the machine was built can help you identify a potential problem
