Caco3(s)→cao(s)+co2(g). estimate δg∘ for this reaction at each of the following temperatures. (assume that δh∘ and δs∘ do not change too much within the given temperature range.) 1090 k

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Its trait is different and it the organism survive

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.

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