A resonance structure is one of two or more Lewis structures that have the same skeletal formula (___1___) but different ___2___. The actual structure of the molecule is ___3___ between the two (or more) resonance structures and is called a ___4___The only structure that actually exists is ___5___. The individual resonance structures ___6___ and are merely a convenient way to describe the actual structure"

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Answer charle's law

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.