Science math
Suppose a laboratory has a 38 g sample of polonium210. The halflife of polonium210 is about 138 days. How many halflives of polonium210 occur in 1104 days? How much polonium is in the sample 1104 days later?
asked by
Joshua

1104/138 = 8 halflives
after 8 halflives, 1/256 remains, or 0.148gposted by Steve

How many halflives of polonium210 occur in 1104 days? 1104/138 = 8.0 halflives
How much polonium is in the sample 1104 days later? 38 g * (1/2)^8 = 0.148 gposted by drwls

Thank you both very much.
posted by Joshua

8; 2,622 g
posted by Joseph

8; 0.11
posted by abbie

8';0.148
posted by christina
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