Question

1. isotope mass (u) fractional abundance

cr - 50 49.946 (0.0435) 4.35%
cr - 52 51.941 (0.838) 83.8%
cr - 53 52.941 (0.095) 9.5%
cr - 54 53.939 (0.0235) 2.35%
average atomic mass of chromium = 51.996 amu

1. isotope mass (u) fractional abundance

i - 127 127.0 80%
i - 126 126.0 17%
i - 128 128.0 3%
average atomic mass of iodine =

1. isotope mass (u) fractional abundance

au - 197 196.56 50%
au - 198 197.96 50%
average atomic mass of gold =

1. isotope mass (u) fractional abundance

fe - 55 54.876 14.5%
fe - 56 55.998 85.5%
average atomic mass of iron =

1. isotope mass (u) fractional abundance

h - 1 0.98 99%
h - 2 1.97 0.8%
h - 3 2.98 0.2%
average atomic mass of hydrogen =

1. isotope mass (u) fractional abundance

n - 14 14.0 95%
n - 15 15.0 3%
n - 16 16.0 2%
average atomic mass of nitrogen =

1. isotope mass (u) fractional abundance

c - 12 12.0 98%
c - 13 13.0 0.5%
1.5%

Explanation:

Step1: Convert percentages to fractions

I-127[SSE Completed, Client Connection Error][SSE onError error]

Answer:

Step1: Convert percentages to fractions

I-127[SSE Completed, Client Connection Error][SSE onError error]