Osmolarity And Osmolality
NAPLEX · Flashcards · Application
NAPLEX · FLASHCARDS
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QUESTION
Calculate osmolarity for
0.20
0.20
0.20
M glucose (assume
i
=
1
i=1
i
=
1
). What is the osmolarity?
QUESTION
Calculate serum osmolality for Na
140
140
140
, glucose
90
90
90
, BUN
14
14
14
(mg/dL). What is it?
QUESTION
Calculate osmolarity for
0.15
0.15
0.15
M NaCl (assume
i
=
2
i=2
i
=
2
). What is the osmolarity?
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ANSWER
0.30
0.30
0.30
Osm/L (=
300
300
300
mOsm/L). NaCl dissociates into two ions (
i
=
2
i=2
i
=
2
), making osmolarity twice the molarity, resulting in
0.30
0.30
0.30
Osm/L.
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