A-2
Example Conversions
Beginning with 2.50 g/L dextrose, convert this to mg\L, then % and finally to mmol/L:
1. Multiply by unit conversion(s)
2. Cancel units common in “numerator” and “denominator”
3. Multiply numbers
? mg/L = 2.50 g/L
= (2.50 g/L)(1000 mg/g) = (2.50)(1000) mg/L =
2500 mg/L
? % (w/v) = 2.50 g/L
= (2.50 g/L)(0.1 L/dL) = (2.50)(0.1) g/dL = 0.250 g/dL
=
0.250 %
(Note: g/dL is g/100ml or percent)
? mmol/L = 2.50 g/L
= (2.50 g/L)(1 mole/180 g)(1000 mmole/mole)
= (2.50)(1/180)(1000) mmole/L =
13.89 mmol/L
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