How many grams of salt can be made from a 5-gram sample of sodium combined with unlimited bromine?
Do you mean NaCl or NaBr. I assume NaBr.
2Na + Br2 ==> 2NaBr
mols Na = grams/atomic mass Na = ?
Using the coefficients in the balanced equation convert mols Na to mols NaBr.
Then grams NaBr = mols NaBr x molar mass NaBr.