Here it is. Analysis of several samples of a material containing only iron and oxygen gave the following results. Could these samples be the same compound? Prove it.
Mass of the sample mass of Fe mass of O
sample A 1.518 g 1.094 g 0.424 g
sample B 2.056 g 1.449 g 0.607 g
sample C 1.873 g 1.335 g 0.538 g