Question

"Hey! I really got to go to the bathroom, would you be able to make 45 ml of a 13 fold dilution of the Magnesium Sulfate stock I left on the bench? There should be plenty stock available, thanks!"

How much volume of stock is needed to carry out your scientist buddy's request? (Answer should have 3 decimal places)

*1M MgSO4

Answer 1

585ml

Step-by-step explanation:

13 fold means that volume of the diluted solution is 13 times higher than the volume of the stock.

It means you have to perform 1:13 dilution

D f = Vdiluted/ Vstock

Vdiluted = 13 × Vstock

Vdiluted = 13 × 45ml

Vdiluted = 585ml

You will need to add enough water to the stock (MgSO4) solution till it gets to a total volume of 585ml