Balance the following chemical equations. i. HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O ii. NaOH + H2SO4 → Na2SO4 + H2O iii. NaCl + AgNO3 → AgCl + NaNO3 iv. BaCl2 + H2SO4 → BaSO4 + HCl
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