it is given that there are 2moles of nitrate ions and 1.2moles of iron(II)ions in a mixture of iron(II)nitrate and iron(II)carbonate.Calculate the number of moles of carbonate ions.
Fe(NO3)2..........FeCO3
2 moles NO3^- means 1 mole Fe used for Fe(NO3)2. If there are 1.2 moles Fe(II), that leaves 0.2 moles to form FeCO3 and since the ratio of FeCO2 is 1:1, that means 0.2 mole CO3^2-.