Limestone consists mainly of the mineral calcite, CaCO3. The carbonate content of 0.541 3 g of powdered limestone was measured by suspending the powder in water, adding 10.00 mL of 1.396 M HCl, and heating to dissolve the solid and expel CO2: with hypobromite, OBr2, by the reaction 2NH3 1 3OBr2 S N2 1 3Br2 1 3H2O. What is the molarity of a hypobromite solution if 1.00 mL of the OBr2 solution reacts with 1.69 mg of NH3