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Title: A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is Post by: Think on Dec 6, 2014 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 Title: Re: A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is Post by: mel!811 on Dec 6, 2014 Content hidden
Title: Re: A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is Post by: Brandi Griffith on Oct 21, 2020 Thanks
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