The ribbon plant on left is a terrestrial plant and will rot. The sword may or may not be a terrestrial plant, depending if it is a brazilian sword or amazon. Either way, it'll get too large for your tank... The fern on the far right is terrestrial as well.
Sorry to be the bearer of bad news!
Go back to petco and ask for your money back. The fact that they do this to people who don't know better makes me sooooo mad!