3. The following reaction shows the synthesis of zinc citrate, Zn,(C6H5O7)2, an
ingredient in toothpaste, from zinc carbonate, ZnCO3, and citric acid, C,H,O7.
3ZnCO3(s) + 2C,H,O,(aq) → Zn3(C6H5O7)2(aq) + 3H₂O(l) + 3CO₂(g)
How many grams of citric acid would have to be used to produce 0.25mL of
water? (density of water = 0.997 g/mL)
a.