alleryA concentration of 3% w/v usually means
A3 g per 100 g
B3 mL per 100 mL
C3 g per 100 mL
D3 mL per 100 g
Answer & Solution
Correct answer: C. 3 g per 100 mL
1. The letters w/v stand for weight by volume.
2. So 3% w/v means 3 g of substance in every 100 mL of solution.
3. Because the units differ, it is not a dimensionless ratio like weight/weight.
_Source: Wikipedia, Ratio, Units_
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