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Calculate the quantity of NH3 is produced upon reaction of 4.0 moles of water and 65.0 g of CaCN2?

Find out the concentration of Ni2 ions at equilibrium when a 0.150-mole quantity of NiCl2 is combined to a liter of 1.20 M NH3 solution. Formation constant* of Ni(NH3)62 = 5.5 × 108.

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