Radium-228 has a half-life of 5.75 years. What is the decay rate for radium-228?
1 answer:
Decay rate for Radium-228 is 0.01205
Step-by-step explanation:
The half life of radium-228 is 5.75 years. We need to find the decay rate for radium.
The formula used is:
Where N₀ = amount of radioactive particles at time = 0
N_t = amount of radioactive particles are time (t)
λ = rate of decay constant
t = time
We are given half life so, =0.5
t= 5.75 years
We need to find λ
Putting values in formula and solving:
So, Decay rate for Radium-228 is 0.01205.
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Answer:
5 and 6
Step-by-step explanation:
We have to first solve the given equation
Now, taking log in the both sides we get,
⇒ x log 10=log 432901 {Since we have the logarithm property, log aᵇ =b log a}
⇒ x =log 432901 {Since log 10=1}
⇒ x=5.636.
Therefore, the consecutive integers that are under and over the value of x are 5 and 6. (Answer)