Question

Applying the equation
+=2.303 logio No
2 got a logio No
120
2.2.3. log 1020
- 16. 54 days
z 그
2) Find the time required for decay of
readioactive element
element haking half life 20 days .
257.8​

Answer 1

Answer:

285.87 is the correct answer

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Explanation:

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Answer 2

Answer:

$\large\underline\bold\red{285.87}$