Home
Class 12
CHEMISTRY
During nuclear explosion, one of the pro...

During nuclear explosion, one of the products is `.^(99)Sr` with half`-` life of `28.1 `years. If `1 mug` of `.^(90)Sr` was absorbed in the bones of a newly born baby instead of calcium, how much of its will remain after 10 years and 60 years if it is not lost metabolically.

Text Solution

Verified by Experts

`t_(1//2)` for `Sr^(90)=28.1 yr`
`:. K=0.693/28.1 yr^(-1)`
Now, `t=2.303/K"log"a/((a-x))( :' a=1 mug)`
At `t=10 yr`
`10=(2.303xx28.1)/0.693"log" 1/((1-x))`
`:.` amount of Sr left `=(1-x)=0.7814 mug`
At `t=60 yr, 60=2.303/0.693"log"1/((1-x))`
`:. (1-x)=0.227 mug`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    P BAHADUR|Exercise Exercise 1|2 Videos

  • CHEMICAL KINETICS

    P BAHADUR|Exercise Exercise 3A|2 Videos

  • DILUTE SOLUTION AND COLLIGATIVE PROPERTIES

    P BAHADUR|Exercise Exercise 9 Advanced Numerical|12 Videos

Similar Questions

Explore conceptually related problems

During the nuclear explosion, one of the products is ._(90)Sr with half life of 6.93 years. If mug" of "._(90)Sr was absorbed in the bones of a newly born in place of Ca, how much time (in years) is required to reduce it by 90% . If it is not lost metabolically? Report your answer by rounding it up to a nearest whole number.

Calculate the activity of one gm sample of ._(38)^(90)Sr whose half life period is 28.8 years.

Half life of 90Sr is 6.93 years. In a child body 1 g of 90Sr dopped in place of calcium, how many years will it take to reduce its concentration by 90% (Assume no involvement of Sr in metabolism)

One of the hazards of nuclear expolsion is the generation of .^(90)Sr and its subsequent incorportion in bones. This nuclide has a half-life of 28.1 year. Suppose one microgram was absorted by a new-born chid, how much Sr^(90) will remain in his bones after 20 year?

One of the hazards of explosion is the generation of Sr""^(90) and its subsequent incoperation in bones. This nuclide has a half life of 2.81 years. Suppose one microgram was absorbed by a new born chiled,how much Sr""^(90) will remain in his bone after 20 years?