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jimdawg3025 jimdawg3025
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9 years ago Edited: 9 years ago, jimdawg3025
Inside concentrations of Ions are as Follows

Na+= 20 mM
K+= ??
Cl-= 5 mM
A- (impermeable ions)= 165 mM

Outside concentrations

Na+= 140 mM
K+= 5 mM
Cl-= 145 mM
impermeable non electrolytes= ??


Post Merge: 9 years ago

Plz Help!!! Its Urgent!!
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#1
9 years ago
Shouldn't the inside (+) charges equal the outside (+) and vise versa for the (-) charges?
The (+) outside charges for Na+ (140mM) and K+ (5mM) totals 145mM. So it makes sense if the inside K+ is equal to 145mM minus Na+ inside (20mM), or 125mM.
The (-) charge inside is A- (165mM) and Cl- (5mM) = 170mM. So, the impermeable non electrolyte should be 170mM minus Cl- outside (145mM), or 25mM.
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#2
9 years ago
You say, "Shouldn't".  Does that mean you're unsure about it yourself?
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