What occurs when #Ba(NO_3)_2(aq)# and #Na_2SO_4(aq)# are mixed?
Well, all nitrates are soluble.........
And all sodium salts are soluble...and most sulfates are soluble. Barium sulfate, however, is reasonably insoluble
And should barium nitrate, and sodium sulfate be mixed in aqueous solution, a
And we could write the net ionic equation, given that nitrate and sodium salts are all soluble......
None of this is a replacement for doing the experiment, and noting down your observations.