The table below lists the naturally occurring isotopes of element X. Calculate the average atomic mass. Mass of isotope Relative abundance
15.33 amu 28.60%
17.26 amu 13.30%
18.11 amu 58.10%

A) 17.65 amu
B) 17.11 amu
C) 16.90 amu
D) 17.20 amu

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

Which of these is an intensive property of a substance