I don't see a procedure so I can't be too helpful; however, here are some common errors if you used a solution.
1. Weighing errors.
2. Did you filter anything? If so some could have splattered out. Same thing for boiling away liquid such as water from a solution.
3. If you dried a sample students often leave water; i.e., the sample isn't dried and water is weighed along with the precipitate.
Equation: Fe+CuCl2>FeCl2+Cu
The ratio of moles of copper produced to moles of iron reacted should be 1:1,but I get 60:17 in lab,can you state at least 3 errors for me?
2 answers
The iron could have a charge of +3, and your equation would have to be rebalanced
2 answers