Final answer:
To find the concentration of nitrate ions in the final solution, use the equation for dilution and calculate the moles of each compound. Then, add the moles of nitrate ions together and divide by the total volume. For the given volumes and concentrations, the concentration of nitrate ions is 0.244 M.
Step-by-step explanation:
To find the concentration of nitrate ions in the final solution, we can use the concept of dilution. The equation for dilution is M1V1 = M2V2, where M1 and V1 are the initial concentration and volume, and M2 and V2 are the final concentration and volume.
First, calculate the moles of KNO3 and Zn(NO3)2 using the given volumes and concentrations. Then, add the moles of nitrate ions together and divide by the total volume to find the final concentration of nitrate ions in the solution.
For example, if we calculate the moles of KNO3 and Zn(NO3)2 to be 0.0756 and 0.0783 moles, respectively, and the total volume to be 630 mL, the concentration of nitrate ions is 0.244 M.