The table below compares some of the properties of three different objects that are all made of pure substances. Object Melting Point Mass Volume X 327.5°C 10 g 25 cm3 Y 1,083°C 10 g 12.5 cm3 Z 327.5°C 5 g 12.5 cm3 According to the table, which of the following is most likely true?
PLEASE I NEED HELP CAUSE I HATE SCIENCE

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