Which term describes this reaction?
r0 r2
r1 ,0
h3n+ -c-c +
h o-
-o-
h
h-n
h
r2,0
-c-c
h o- |
h 3n+-c-c-n-c-c
-
h
h
h
o-
h20
o
o
o
addition
condensation
elimination
substitution

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

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: