According to one of my labs, the atomic mass of Zinc can be determined by the balanced equation,
Zn + 2HCl ---> H2 + ZnCl2
Then it says "the number of moles of zinc metal that reacted be be calculated"
So then I use the number of moles of H2 that I calculated (we did a barometric experiment and calculated moles of H2,n, from n = PV/RT) and I do:
.00581 mol H2 x (1 mol Zn / 1 mol H2) = .00581 mol of Zn
then it says "Since all the original Zinc is consumed in this reaction, the atomic mass of zinc can thereby be determined..."
My question is, how do I determine this?