The half-life of iodine-131 is 8 days. Chan Hee examines two samples of iodine-131.Sample 1: 10 gSample 2: 20 gWhat can Chan Hee expect to observe about the samples after 16 days?
Answer
A
The mass of iodine-131 in sample 1 will be 7.5 g and in sample 2 will be 16 g.
B
Three-fourths of each sample will have undergone radioactive decay.
C
Ten grams of each sample will have undergone radioactive decay.