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Question
What percent of a present amount of radioactive radium
will remain after 900 years?A) 45%
B) 25%
C) 65%
D) 68%.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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B) The number of medical degrees is increasing from 1975 to 1991 and 1999 to 2005, and decreasing during 1991 to 1999.
C) The number of medical degrees is increasing from 1975 to 1992 and 1999 to 2005, and decreasing during 1992 to 1999.
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