Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
The half-life of Radium-226 is 1590 years. If a sample contains
200 mg, how many mg will remain after 1000 years?
mg
Give your answer accurate to at least 2 decimal places.
Enter DNE for Does Not Exist, oo for Infinity 129.3311