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[PHC - JamCol]

How many mL of hydrogen peroxide are needed to make a 8.5% solution by volume of hydrogen peroxide if you want to make 450 mL of solution?

 

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To make an 8.5% solution of hydrogen peroxide by volume, you need 8.5 mL of hydrogen peroxide per 100 mL of solution.

Therefore, to make 450 mL of solution, you need to calculate 8.5% of 450 mL:

8.5/100 x 450 mL = 38.25 mL

So, you would need 38.25 mL of hydrogen peroxide to make a 8.5% solution by volume of hydrogen peroxide in 450 mL of solution.