(radioactivity) the half-life of radioactive cobalt is 5.3 years. after a nuclear reactor accident, the surrounding region had 100 times the amount of cobalt acceptable for habitation. how long will it be before the region is habitable?

It will be 35 years before the region is habitable.

Step-by-step explanation:

Since we have given that

Half life of radioactive cobalt = 5.3 years

Let the initial amount of cobalt = x

final amount of cobalt = 100x

So, we need to find the time that before the region is habitable.

So, it becomes,

Hence, it will be 35 years before the region is habitable.

true !

step-by-step explanation:

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