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Think Think
wrote...
Posts: 2431
9 years ago
A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is left after 5.7 years?
A) 150
B) 75
C) 300
D) 0
E) none of the above

Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
Author:
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Answer accepted by topic starter
mel!811mel!811
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9 years ago
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3 years ago
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