<span>measurement in Ci/Bq
the amount of radioactive materials released into the environment.
number of disintegrations of radioactive atoms in a radioactive material over a period of time</span>
PbO2
You have to take the mass of lead in the problem, and divide by the molar mass.
When you do the same with oxygen, you get a number about twice as large as when you divide the mass of lead by the molar mass of lead. This means that the simplest formula would be PbO2
2.6x10negative4power
2.6x10^-4
I also think it’s B but not quite sure
It'll beginning to evaporate.
