Some Basic Concepts Of Chemistry Question 44

Question: The ppm level of F in a 500 g sample of a tooth paste containing 0.2gF is

Options:

A) 400

B) 1000

C) 250

D) 200

Show Answer

Answer:

Correct Answer: A

Solution:

[a] ppm=wt.,of,solutewt.,of,solvent×106 =0.2500×106=400



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