Radioactive material undergoes 1st order decay kinetics.
For 1st order decay, half life = 0.693/k
where k = rate constant
k = 0.693/half life = 0.693/8.02 = 0.0864 day-1
Now, for 1st order reaction,
k =

Given: t = 6.01d, initial conc. = 5mg
∴0.0864 =

∴ final conc. = 2.975 mg
Answer:
Energy in the ocean and the atmosphere
Explanation:
Hope this helps!
Answer:
I think it could be Between A or D
Explanation:
I'm not sure but I think idk so sorry if it's so wrong
It is measured with a barometer