Write balanced net ionic equations for the reactions that occur when the following aqueous solutions are mixed. If no reaction is likely to occur, so indicate. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer. If no reaction occurs, enter "NONE".)
A) calcium nitrate and sulfuric acid
B) lead(II) nitrate and sodium sulfate
C) nickel(II) nitrate and sodium hydroxide