226/2 = 113
The question, as posed cannot be answered because you have not stated the units for the half-life. Some things have half lives of millions of years while others have half-lives measured in micro-seconds. Fortunately, Wikipedia came to my rescue and the half-life is 1600 years (approx). The answer is approx 4.3 grams.
27divide 226 = 0.11946902654867257
113
37.6667
It is: 226/3 = 75 with a remainder of 1
1.875g
After 4 half-lives, the amount remaining is ( (1/2)^4 ), which equals 1/16. Therefore, 1 gram of radium-226 will have 1/16 gram unchanged after four half-lives, which is 0.0625 grams.
(1/2) pound = 226 796.185 milligrams
After each half-life, half of the radium-226 will decay. Therefore, after four half-lives, 1/2^4 or 1/16th of the original gram of radium-226 will remain unchanged. This means that 1/16th of a gram, or 0.0625 grams, will still be unchanged after four half-lives.
8 ounces = Half a Pound OR 226 Grams
The question, as posed cannot be answered because you have not stated the units for the half-life. Some things have half lives of millions of years while others have half-lives measured in micro-seconds. Fortunately, Wikipedia came to my rescue and the half-life is 1600 years (approx). The answer is approx 4.3 grams.
226 x 1 = 226 226 x 2 = 452 226 x 3 = 678 226 x 4 = 904 226 x 5 = 1130 226 x 6 = 1356
113 x 2 is 226
The cube is raised to the power of 3, or 226 x 226 x 226 = 11543176.
I will try to make the answer simple for you. Half life is 1600 years. So After 1600 years you have half the mass left. That is 10 grams. After another 1600 years, you will be left with half the mass of 10 grams. That is five grams. So after total 3200 years you will be left with 5 grams of mass of the Ra-226 left with.
The driving distance is 226 miles, which takes about 4 and a half hours.
226 2,113