Polylysine and polyglutamate are two examples of synthetic polypeptides that can assume an α‑helical structure under appropriate conditions. identify which two synthetic polypeptides can form an α‑helix at the indicated ph values. polyglutamate at ph 13ph 13 polyglutamate at ph 2ph 2 polylysine at ph 2ph 2 polyglutamate at ph 7ph 7 polylysine at ph 13ph 13 polylysine at ph 7

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2