The question is:
The word equation for the reaction is:
iron + chlorine → iron chloride
The teacher weighed:
• the glass tube
• the glass tube and iron before the reaction
• the glass tube and iron chloride after the reaction.
Table 6 shows the teacher’s results.
Table 6
Mass in g
Glass tube 51.56
Glass tube and iron 56.04
Glass tube and iron chloride 64.56
Calculate the simplest whole number ratio of:
moles of iron atoms : moles of chlorine atoms
Determine the balanced equation for the reaction.
Relative atomic masses (Ar): Cl = 35.5 Fe = 56
I know that the balanced symbol equation is 2Fe+3Cl --> 2FeCl3
and i've calculated the Mr for all. I also know that moles= mass divided by Mr. Just not sure how to put it all together and confused about the glass tubes. Any help would be greatly appreciated.