Approximately how much of the 3% stock solution of hydrogen peroxide will you need to complete all the trials in this experiment (total for all trials)?

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.

What are the options? i can you if you give them.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

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