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The ppm level of F ⁻ in a 500 ~g sample of a tooth paste containing 0.2 ~g ~F ⁻ is

Options

  1. A400
  2. B1000
  3. C250
  4. D200

Correct answer

A. 400

Step-by-step solution

aligned ppm & = wt. of solute wt. of solvent 10^6 & = 0.2 500 10^6=400 aligned

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