One method for separating polypeptides utilizes their different solubilities. the solubility of large polypeptides in water depends upon the relative polarity of their r groups, particularly the number of ionized groups. the more ionized groups there are, the more soluble the polypeptide. which polypeptide, (gly)20 or (lys−ala)3 , is more soluble at ph 7.0 ? (lys−ala)3 (gly)20 which polypeptide, (glu)20 or (phe−met)3 , is more soluble at ph 7.0 ? (glu)20 (phe−met)3 which polypeptide, (ala−asp−gly)5 or (asn−ser−his)5 , is more soluble at ph 3.0? (asn−ser−his)5 (ala−asp−gly)5 which polypeptide, (ala−ser−gly)5 or (asn−ser−his)5 , is more soluble at ph 6.0? (ala−ser−gly)5

What type of reaction is zn + cucl2 → cu + zncl2?

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above