A sample of mercury (II) bromide, HgBr2, weighs 4.26g. How many moles are in this

  • Thread starter Thread starter comicrelief08
  • Start date Start date
C

comicrelief08

Guest
sample? If you need the atomic mass of the elements, here they are:
Hg - 200.60
Br - 79.90
 
Molar mass Hg Br2 360.41 g / mole.
Moles in sample = 4.26 / 360.41 = 0.0118;
 
Hg = 200.60 g/mol
Br = 79.90 g/mol
HgBr2 = 200.60 + 2×79.90 = 360.40 g/mol

360.40 g is the weight of 1 mole of HgBr2, so
4.26 gram is the weight of 4.26 / 360.40 = 0.0118 mole of HgBr2
 
Back
Top