.25 mg
0.5 mg
0.25 mg
1 mg
.25 mg
0.5 mg
This would depend on the specific sample and its stability. Without additional information, it is not possible to determine how much of the sample would remain unchanged after two hours.
5g would remain
1mg
0.5 mg
The mass is 1,075 g.
The mass is 1,075 g.
To determine how much of a 100 gram sample would remain unchanged after 2 hours, it is necessary to know the specific decay rate or change process of the sample. For example, if the sample undergoes a decay process with a known half-life, you can calculate the remaining amount using the formula for exponential decay. Without this information, it's impossible to provide an exact answer. In general, if no decay occurs, the entire 100 grams would remain unchanged.
I suppose that you think to the radioactive isotope Cs-17; After 4 years remain 9,122 g.
You must know the half life of Caesium to calculate this.
Plutonium-239 has a half-life of about 24,100 years, meaning it takes that long for half of a sample to decay. In 43 years, which is much shorter than the half-life, only a tiny fraction of the plutonium would decay. Therefore, after 43 years, approximately 99.83 grams of the original 100-gram sample would remain.
1 mg
0.25