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Q: What fraction of U-238 atoms present at 1 half-life remain after 2 half-lives?
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Related questions

What is the present tense of remain?

the present tense of remain is remain


Is remain a past present or future tense?

"Remain" can be used in the present tense (e.g., "He remains calm"), past tense (e.g., "He remained calm"), and future tense (e.g., "He will remain calm").


After three half-lives what fraction of a radioactive sample will remain?

Approx 1/8 will remain.


How much of one gram of radium-226 will remain unchanged after four half-lives?

After each half-life, half of the radium-226 will decay. Therefore, after four half-lives, 1/2^4 or 1/16th of the original gram of radium-226 will remain unchanged. This means that 1/16th of a gram, or 0.0625 grams, will still be unchanged after four half-lives.


What fraction of a radium sample will remain after 3240?

The answer depends on 3240 WHAT: seconds, days, years?


How do you change 2 13 into an improper fraction?

2/13 cannot be written as an improper fraction since [the absolute value of] its numerator is less than [the absolute value of] its denominator. It will remain a proper fraction.


What homophone means remain and heaviness?

Remain: WaitHeaviness: Weight


What are the odds of a terrorist attack on the US?

It remain an ever present and real threat.


What does to remain alive or in existence mean?

To remain alive or in existence means to continue to exist or be present, to avoid ceasing to be, and to maintain life or survival.


How do you write 2 and 3 over 8 as improper fraction?

The numerator of the improper fraction will be 2*8 + 3 = 19 and the denominator will remain the same as that for the fractional part of the mixed fraction. So the improper fraction is 19/8.


Is remain an adverb?

No. Remained is the past tense and past participle of the verb (to remain), but for this verb there is no adverb for this or the adjective / present participle remaining).


What fraction of uranium 235 is left after 1400 million years?

25 % uranium remain, 75 % is disintegrated.