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vande060
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Homework Statement
how do you prepare a solution for 25ml of 2.5% glucose form a stock of 1.75M glucose
i don't get how you would do this without the density of 2.5% glucose solution
Homework Equations
c1v2 = c2v2
molecular mass glucose = 180g/mol
The Attempt at a Solution
not sure if I am doing this right:
2.5 % m/v
2.5g in 100ml water (i got help with this definition, but i still don't understand how you can say this. is it because 100ml = 100g water and 2.5g/100g = .025 of 2.5 %?)
25g in 1l
so i need a solution that has 25g/liter
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1.75M * 180g/mol = 315g/l
c1v2 = c2v2
315(v1) = 25*25
v1 = 1.98
with sig figs = 2ml of the original solution needed
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