Mass of crude sample=1.2g Mass of recrystallized (pure)=0.474g % of recrystallized sample=?

In essay form with examples

Organic chemistry

In fact my book seduces me with its spine that beckons from the shelf, yearning for my touch. When I reach out to hold it between my fingers it eases into them, slides into my palm, yields to my gaze.

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References