A radioactive material has a half-life of 30 days. You begin with 4 grams of radioactive material.
1 answer:
Answer:
a. 0.5 grams b. 0.25
Explanation:
Just use the half-life formula(I linked it below)
a. 4(1/2)^90/30=1/2
b. 4(1/2)^120/30=1/4
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