Determine the volume of carbon dioxide gas produced at STP when 2.5 g of nitroglycerin decomposes by this balanced equation.

4C3H5N309(1) —> 12C02(g) + 10H20(g) + 6N2(g) + O2(g)

C: plants and animals

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.

Ithink ur answer would be c hope u have a good day: )

Your is  answer:   4.44*my answers too short so i'm just gonna write this so that it lets me submit it, lol*