Iodine-131 is a radioactive form of iodine. after the crisis at a japanese nuclear power plant in march 2011, elevated levels of this substance were detected thousands of miles away from japan. iodine-131 has a half-life of 8 days. what is the daily decay factor for this substance?

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.