Can someone pls me with number 8? ~

So we can use the equation:

where M is the concentration and V is the volume in liters.

We can then solve for how much of the stock solution we are going to put into the new solution:

Then we can solve for V_{2}:

So now we know that we need to use 150 mL of the stock solution in the new solution - and we know that the total volume of the new solution is 500 mL. So therefore the rest of the new solution should be water:

So the rest of the solution (350 mL) is water.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.