prepare 300ml 1 in 6000 solution from a 1 in 200 solution (diluent water)?

Answer 1

c1=1/6000 mol/ml, v1=300ml, c2=1/200mol/ml, v2=??
note n = cv
relates the number of moles to the concentration & volume
so
c1v1 = c2v2
is the general formula you use for these types of problems
which gives
v2 = c1v1/c2 = (1/6000)(300)/(1/200) = 10ml
so your 300ml solution must contain 10ml of 1/200 solution
ie 290ml water + 10ml of 1/200 solution
makes 300ml of 1/6000 solution

the end
.

Answer 2

The solution required is one thirtieth as concentrated as the one provided. The concentrated one has to be diluted so it occupies a volume 30x the present volume. So take 10ml of the 1 in 200 solution and add water to make 300ml.

Answer 3

Pour your 1:200 solution into 6litres of water and mix it then use 300 ml of that solution to get the 1:6000.

hope this helps.

Answer 4

Suggest try this:
What you've got (200)
over
What you want (6000)
times
How much you want of it (300).
(200 / 6000) * 300 = 10
So add 290 mls H20 to 10 mls 1:300 to get what you want.