Strontium-90 has a half-life of 29 years. in how many years will a 1 kg sample of strontium-90 decay and reduce to 0.25 kg of strontium-90?

The weight of Strontium-90 will reduce to Kg in years.

Explanation:

Given -

Radioactive isotope sample of Strontium-90 Kg

Half life of Strontium-90 years

After first half life (i.e 29 years), the weight of Strontium-90

Kg

After second half life (i.e 58 years), the weight of Strontium-90

Kg

Thus, the weight of Strontium-90 will reduce to Kg in years.

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