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21.) You have an aqueous 0.0100 L of a 4.00 M Solinn of Heparin, a blood thinning drug. You want to dilute this stock solutio

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please explain steps
TIA

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Answer #1

When diluting solutions, we use the equation M1V1 = M2V2,

where M1 is the initial molarity in mol/L, (mol/L is denoted as M)

M2 is the final molarity in mol/L

V1 is the initial volume in Liters

V2 is the final volume in Liters.

Known
M1 = 4 mol/L heparin
V1 = 0.0100 L
M2 = 0.0500 mol/L heparin

Unknown V2

Solution
Rearrange the equation to isolate V2. Substitute the known values into the equation and solve.

V2 = M1V1/M2

V2 = 4M×0.0100L /0.0500M = 0.8 L

In order to obtain a volume of 0.8L ,0.79 Litre (0.8 L - 0.0100 L) of water must be added to the original solution of 0.0100 L

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