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47. Before you make the solution in #46, you discover a bottle of 7.50 M NaCl solution. What volume of the 7.50 M NaCl soluti
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Answer #1

47)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 7.5 M

M2 = 1.25 M

V2 = 350 mL

use:

M1*V1 = M2*V2

V1 = (M2 * V2) / M1

V1 = (1.25*350)/7.5

V1 = 58.3333 mL

Answer: 58.3 mL

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