# Chemistry

posted by .

What volume of a 0.5 M solution is required to prepare 250 mL of a 0.15M solution?
(Note: M = mole per Litre)

• Chemistry -

You want to dilute it by a factor of .5/.15, or 3.33 times. So you need one part original, 2.33 parts water to dilute.

What is one part? 250/3.33=75ml
so you need 75 ml of the original solution. Add 75*2.33=175ml water, stir, and label.

## Similar Questions

1. ### Chem

Calculate the concentration in mol per litre of ammonium ions in a solution solution prepared by mixing 360.0mL of 0.250 mol per litre ammonium sulphate solution with 675.0mL of 1.20mol per litre ammonium nitrate solution. Assume solution …
2. ### chemistry

what is the molarity of a solution containing 1 mole of urea per litre of the solution ?
3. ### Chemistry

What volume of a 0.5 M solution is required to prepare 250 mL of a 0.15M solution?
4. ### chemistry

25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the acid per litre for complete neutralization. Calculate the volume of 0.84N Hes04 that will be completely …
5. ### chemistry

25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the acid per litre for complete neutralization. Calculate the volume of 0.84N heso4 that will be compltetly …
6. ### Chemistry

Calculate volume of 6MHCL required to prepare a 250 ml of a 0.15MHCL solution?
7. ### Chemistry

25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of this solution required 20ml of N/10 kmn04 solution for complete oxidation. Calculate the percentage of …
8. ### Chemistry

4 Questions on molarity that I really don't understand. I have the formulas, but they don't seem to fit in to the question right. Please take a look, thanks! 1. Calculate the weight, in grams, of HNO3 present in 1.0 litre of 0.10M …
9. ### chemistry

When 25 mL of C2H5OH (density 0.80 g.cm-3) is dissolved in water to prepare a 250 mL solution, the density of the solution was found to be 0.950 g.cm-3. Calculate a. Molarity of pure ethanol; b. Molarity of ethanol in the final solution; …
10. ### Science-Chemistry(mole concept)

How many kg of wet NaOH containing 15% water are required to prepare 70 litre of 0.5N solution?

More Similar Questions