Answered

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Q Q 3. (08.02 MC)
What volume of 0.550 M KBr solution can you make from 100.0 mL of 2.50 M KBr? (3 points)
O 455 mL
576 ml
924 ml
O 1.230 ml

Sagot :

Answer: A volume of 455 mL from 0.550 M KBr solution can be made from 100.0 mL of 2.50 M KBr.

Explanation:

Given: [tex]V_{1}[/tex] = ?,         [tex]M_{1}[/tex] = 0.55 M

[tex]V_{2}[/tex] = 100.0 mL,        [tex]M_{2}[/tex] = 2.50 M

Formula used to calculate the volume of KBr is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\0.55 M \times V_{1} = 2.50 M \times 100.0 mL\\V_{1} = 455 mL[/tex]

Thus, we can conclude that a volume of 455 mL from 0.550 M KBr solution can be made from 100.0 mL of 2.50 M KBr.

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