The Virtual R.A.P.P., or Realtime Assistant for Practice Problems, is your key to success in the world of introductory chemistry.
The R.A.P.P. gives you immediate feedback on your answers. It's like having Mr. Rapp right there to help you get it right, without any of the shame of being wrong in the first place. The R.A.P.P. also lets you submit your answers to Mr. Rapp, and resume your progress if you can't finish in one day.
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