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A student prepared the three solutions listed in the table using graduated pipettes. Determine the initial...

A student prepared the three solutions listed in the table using graduated pipettes. Determine the initial molarities of H2O2 in each of the 3 solutions to the correct sig figs.

Solution Volume of 3.0% H2O2 (mL) Volume of DI water (mL) Volume of pH=7 buffer (mL) Initial molarity H2O2
1 18.75 1.25 2.00
2 12.50 7.50 2.00
3 6.25 13.75 2.00

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