A student investigated the reaction of iron with bromine gas.
The word equation for the reaction is:
iron+bromine→iron bromide \text{iron} + \text{bromine} \rightarrow \text{iron bromide} iron+bromine→iron bromideThe student weighed:
The table below shows the student's results:
| Mass in g\text{g}g | |
|---|---|
| Glass tube | 25.30 |
| Glass tube and iron | 28.10 |
| Glass tube and iron bromide | 40.10 |
Calculate the simplest whole number ratio of:
moles of iron atoms:moles of bromine atoms \text{moles of iron atoms} : \text{moles of bromine atoms} moles of iron atoms:moles of bromine atomsDetermine the balanced chemical equation for the reaction.
Relative atomic masses (ArA_rAr): Br=80\text{Br} = 80Br=80, Fe=56\text{Fe} = 56Fe=56