Multiple choice

What is concentration of salt in blood?

  1. 150 mg per 100 ml

  2. 200 mg per 100 ml

  3. 0.9 mg per 100 ml

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The normal concentration of sodium chloride in human blood is approximately 0.9 percent by mass, which translates to about 900 mg per 100 ml, not the incorrect figures listed in options A through C. Thus, none of the provided numerical options are accurate.

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