Chemistry

Chemistry, 16.06.2021 08:20, Bigman8518

What is the total mass of a 10 gram sample of 42K that will remain unchanged after 12.4 hours?
A 2.5 g
B 5.0g
C 7.5 g
D 10 g

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What is the total mass of a 10 gram sample of 42K that will remain unchanged after 12.4 hours?

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