jackfooman2826 jackfooman2826
  • 17-10-2019
  • Biology
contestada

How many microliters of original sample are required to produce a final dilution of 10-3 in a total volume of 1,000 mL?

Respuesta :

Mergus Mergus
  • 17-10-2019

Answer:

[tex]10^{9}\ \mu L[/tex]

Explanation:

Considering

[tex]Molarity_{1}\times Volume_{1}=Molarity_{2}\times Volume_{2}[/tex]

Given  that:

[tex]Molarity_{1}=1.0\ M[/tex]  (let)

[tex]Volume_{1}=1000\ mL[/tex]

[tex]Volume_{2}=?[/tex]

[tex]Molarity_{2}=0.001\ M[/tex]

So,  

[tex]1.0\times 1000=0.001\times Volume_{2}[/tex]

Volume = 10⁶ mL

[tex]1\ mL=10^{3}\ \mu L[/tex]

So, Volume = [tex]10^{9}\ \mu L[/tex]

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