Predict the charge on the predominant species of the peptide E-D-K-R-A-S-T at pH 5.0?

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

law of conservation of matter

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants