you were given 1.2*10^7 cells/mL solution. how many cells would be present in 100 microliters

To determine the number of cells present in 100 microliters (µL), we need to convert the given concentration from cells/mL to cells/µL and then multiply it by the volume.

Given:
Concentration = 1.2 x 10^7 cells/mL
Volume = 100 µL

To convert the concentration from cells/mL to cells/µL, we need to divide it by 1000 (since there are 1000 µL in 1 mL):

Concentration (cells/µL) = (1.2 x 10^7 cells/mL) / 1000 = 1.2 x 10^4 cells/µL

Now, we can calculate the number of cells in 100 µL:

Number of cells = Concentration (cells/µL) x Volume (µL)
= 1.2 x 10^4 cells/µL x 100 µL
= 1.2 x 10^6 cells

Therefore, there would be 1.2 x 10^6 cells present in 100 microliters of the solution.