Almost, but not quite, certainly. If you dipped their beaks, they should be OK. Any that did not catch on from your beak dipping should learn from watching the others. But they are living animals and anything can happen.
One time, I had one that did not catch on after beak dipping. Curiously, that was also with 28 chicks. The day after I put them in the brooder, that one just stayed in one spot and gave out the distress peeping. If you have ever heard that, you know what I mean by distress peeping. You can just tell that something is not right by that sound. I dipped its beak in the water again and it stopped the distress peeping and drank a lot of water. I think I know which one it was to this day. I have one that is obviously less intelligent than the others.
Good luck! Despite my story, they should be OK.