Asked by James
A nutritional formula calls for 500 g of dextrose in a total volume of 2000 ml. how many milliliters of a 70% w/v dextrose injection are needed to provide the required amount of dextrose?
This seems to be a dimensional analysis problem. We have:
500g/2000ml
70% w/v = 70 g dextrose/100 ml
Molecular Weight: 1 mmole/180 g dextrose
These are known, yet I am not sure of the set up.
This seems to be a dimensional analysis problem. We have:
500g/2000ml
70% w/v = 70 g dextrose/100 ml
Molecular Weight: 1 mmole/180 g dextrose
These are known, yet I am not sure of the set up.
Answers
Answered by
James
I found out 2000 ml is not necessary knowledge to answer the equation. You simply do the following:
(500g dextrose) * (100 ml solution/70g dextrose) = 714.29 ml
(500g dextrose) * (100 ml solution/70g dextrose) = 714.29 ml
Answered by
Meghna
500gm of Dextrose in 2000ml NS
makes it sol of D25%w conc. (25gm in 100ml)
Thus, to provide D70%
25gm =100ml
70= 100/25*70
= 280ml sol to be infused
makes it sol of D25%w conc. (25gm in 100ml)
Thus, to provide D70%
25gm =100ml
70= 100/25*70
= 280ml sol to be infused
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