Polonium-210 is a radioactive substance with a half life of 138 days. if a nuclear facility is handling 265 grams of polonium-210, then how many grams of polonium-210 will be left after 250 days.

The half life is 138 days, meaning exactly half of the material will decay after this time. Use this information to find the decay factor :

Then after 250 days, there will be

grams left.

Step-by-step explanation:

The amount of substance decreases by 50 % every half-life.

Thus, 50 % of the substance remains at the end of each half-life.

The exponential function is

where x = the number of half-lives.

Data:

a₀ = 265 g

t = 250 da

Calculations:

(a) Calculate x

(b) Calculate a

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm