The table below compares the radioactive decay rates of two materials. Material Original mass of material (in grams) Mass of material after 21.6 seconds (in grams) 1 100 12.5 2 200 25 Based on the table, which of these conclusions is most likely correct? The half-life of Material 1 and Material 2 are equal. The half-life of Material 2 is double the half-life of Material 1. The half-life of Material 2 is 10.8 seconds more than the half-life of Material 1. The half-life of Material 1 is 10.8 seconds more than the half-life of Material 2.

Material Original mass of material (in grams) Mass of material after 21.6 seconds (in grams)
1 100 12.5
2 200 25