suppose that you have amino acid with three dissociated group (α-carboxyl group; α-amino group and basic r-group), with the three pkas are 3, 9, 11 respectively).
a- draw the titration curve (indicate the pka clearly)
b- what is the pi:
c- what is the net charge at ph 6:

they are made of gases.

they have a spherical shape.

they make energy through fusion.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.