in a typical 80z glass of kool aid there is 0.8g of Kool aid mix. What is the mass of the blue dye found in 0.80g of Kool aid

Yes she is correct. the answer is completely correct

What does that mean you dum bum

Answer(2) electrons;

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.