(Solved): 5. How many mL of hydrogen peroxide are needed to make an 8.5% solution by volume of hydrogen perox ...

5. How many $\mathrm{mL}$ of hydrogen peroxide are needed to make an $8.5\%$ solution by volume of hydrogen peroxide if you want to make $450\mathrm{mL}$ of solution? Answer: $38\mathrm{mL}{\mathrm{H}}_2{\mathrm{O}}_2$ 6. Explain how you would make $450\mathrm{mL}$ of a $0.250\mathrm{M}\mathrm{NaOH}$ solution. Answer: 7. To what volume will you have to dilute $30.0\mathrm{mL}$ of a $12\mathrm{M}\mathrm{HCl}$ solution to make a 0.35 $\mathrm{MHCl}$ solution? Answer: $1030\mathrm{mL}$ 8. How many grams of calcium chloride will be needed to make $750\mathrm{mL}$ of a $0.100\mathrm{M}$ ${\mathrm{CaCl}}_2$ solution? Answer: 8.33 grams 9. Explain why this experimental procedure is incorrect. To make $1.00\mathrm{L}$ of a $1.00\mathrm{M}\mathrm{NaCl}$ solution, I will dissolve 58.5 grams of sodium chloride in $1.00\mathrm{L}$ of water. Answer: