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If I need 400 milligrams in 1 gallon water and I have 181.4 grams how much water should I use?
Wiki User
∙ 15y ago
If you want to use the whole 181.4 grams, then you need to calculate how much water to use. 400 mg is 0.4 of a gram, so the weight ratio is 181.4/0.4 = 453.5, so that is the number of gallons of water you should use
Wiki User
∙ 15y ago
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