Question

(a) Chlorine has average atomic mass 35.5 U. If it exist in two isotopic forms Cl and a
Find the percentage of its isotope. ..] 75.)
(b) Define a.m.u.
(c) Calculate the number of moles present in 9.6 g of oxygen gas.​

Answer 1

Answer:

x equal the percentage abundance of one of the two isotopes. The other isotope must then have an abundance of 100 percent minus x percent, which you express in decimal form as (1 - x). For nitrogen, you can set x equal to the abundance of N14 and (1 - x) as the abundance of N15.