Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 950mg of Na present?


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Duane Bryant Profile
Duane Bryant answered
Change word problem to mathematical formula.
100% is to 39%  as  X is to 950
Or 100/39 = X/950    Multiply both sides by 950 to isolate X and then do division on left side

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