1Al2(SO4)3 + 3ZnCl2 → 2AlCl3 + 3ZnSO4
The coefficients represents moles. There is 1 mole of Aluminum Sulfate, 3 moles of Zinc(II) Chloride, 2 moles of Aluminum Chloride, and 3 moles of Zinc(II) Sulfate.
Now add all the coefficients/moles.
9 is the sum of all the coefficients.
I think it would be penicillin as it saved many lives in its time and ours.
Both have a continuous light spectra the fluorescent source makes a spectra with more intense bands of mercury
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C, potassium. Hope this helps.
