Compute the concentration of HCl for all three trials using the formula molarity = mol / L.

Trial 1 (20.61 mL HCl): M

Trial 2 (20.06 mL HCl): M

Trial 3 (19.67 mL HCl): M

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Answer earth,water,fire and air;

Using dilution equationm1v1 =m2v2 ; where m1 and m1 are the intiial and final concentration, and v1 and v2 are the initial and final volume.5  × 5 m = 8 l  × m2m2 = 25/8 = 3.125 mtherefore; the resulting molarity is 3.125 m