Element A has two isotopes 65A and 65A with natural abundance of 69.2% and 30.8%, respectively. Predict the percent relative intensity of M+, M4 and to that of M for ABr2 (natural abundance of 79Br and 81Br, and Brare 50.7% and 49.3%, respectively). find Relative Intensity of M +2, M+ 4 and M + 6

catya that's not even a b or c

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o