Calculations involving masses

In a metallurgical analysis of a Martian meteorite sample, a scientist isolates a pure oxide of iron.

A 4.80 g sample of this oxide is found to contain 3.36 g of iron, with the remainder of the mass being oxygen.

Calculate the empirical formula of this iron oxide. (Relative atomic masses, $ArA_{\text{r}}$ : $Fe=56\text{Fe} = 56$ , $O=16\text{O} = 16$ )

You must show your working.

[3]

In a metallurgical analysis of a Martian meteorite sample, a scientist isolates a pure oxide of iron.

A 4.80 g sample of this oxide is found to contain 3.36 g of iron, with the remainder of the mass being oxygen.

Calculate the empirical formula of this iron oxide. (Relative atomic masses, $ArA_{\text{r}}$ : $Fe=56\text{Fe} = 56$ , $O=16\text{O} = 16$ )

You must show your working.

[3]

Calculations involving masses Questions