Question

How would a scientist make 1,000cc of a 1/10 dilution of concentrate.

Answer 1

1/10 dilution means that there is only 1/10th of the concentrate in the volume. Therefore, 100 cc of the concentrate mixed with 900 cc of water give dilution of 1/10:

$$\omega=\frac{100}{100+900}=1/10.$$