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Anonymous
You need 1000 milligrams to make a gram ("milli" = thousand) so all you have is 20% or 1/5 of a gram.
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1 g = 1,000 mg, thus 0.2 g = 200 mg
1 gram = 1000 milligrams so 0.2 g = 200 mg
8
2.5grams=2500 mg
0.15 mg