Question

Question #f7dcc

Answer 1

150 microliters.

Explanation:

This is a simple problem of Dilution. Please refer to this Answer for a nice explanation of it before proceeding.

You read it? Good, let's continue.

For this case. We have the Final Volume `(V_f)` and the Dilution Factor `(DF)` but not the Initial Volume `(V_i)`.

So this `DF=V_f/V_i`

Becomes this `4=600/V_i`

With some rearranging `V_i=600/4`

Which results in our answer of `V_i=150` microliters