QueenJahaida
QueenJahaida
02-11-2017
Chemistry
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Help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!
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cuanchi
cuanchi
06-11-2017
after the first 2 min the 20 g are only 10g, (1 half-life)
after other 2 more min 5g (2 half-lives)
after other 2 more min 2.5 g (3 half-lives)
after 2 more 1.25 g (4 haf lifes)
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