The amino acid proline has a pk1 of 1.99, pk2 of 10.60. the amino acid serine has pk1 of 2.21 and a of pk2 of 9.15. if these two amino acids bind together by peptide bond creating the peptide sequence pro-ser . what will be the overall charge of this peptide at the physiological ph of 7? a) overall charge will be neutral b) overall charge will be neutral on pro and negatively charged on the ser c) overall charge will be negative d) overall charge will be positive due to the presence of the peptide bond

i'm assuming that it's c.) red bank..

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b