SATHEE: Chemical Kinetics - Result Question 67

Chemical Kinetics - Result Question 67

####66. One of the hazards of nuclear explosion is the generation of $S r^{90}$ and its subsequent incorporation in bones. This nucleide has a half-life of $28.1 y r$ . Suppose one microgram was absorbed by a new-born child, how much $S r^{90}$ will remain in his bones after $20 y r$ .

(1995, 2M)

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Answer:

Correct Answer: 66. $(0.25)$

Solution:

$k_{t} = \ln \frac{w_{0}}{w}$

$\Rightarrow \frac{\ln 2}{28.1} \times 20 = \ln \frac{10^{- 6} g}{w} \Rightarrow w = 6.1 \times 10^{- 7} g$

Chemical Kinetics - Result Question 67

Answer:

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Chemical Kinetics - Result Question 67

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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