Iron, fe, is a solid at room temperature. iron is a shiny, bright white metal that is soft, malleable, ductile and strong. its surface is usually discolored by corrosion, since it combines readily with the oxygen of the air in the presence of moisture. the density of iron is 7.86 g/cc. iron is a good conductor of electricity and heat. consider the paragraph above. what is one chemical property of iron?

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