What does a positive AH look like on a potential energy diagram? A. The potential energy of the products is equal to the potential energy of the reactants. B. The potential energy of the reactants is greater than the potential energy of the products, C. The potential energy of the products is greater than the potential energy of the reactants. D. The activation energy of the reactants is less than the activation energy of the products,​

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