Question

How to find atomic mass of potash alum

Answer 1

Check the periodic table for the atomic masses for each atom in the formula.
Count the number of each type of atom in formula.
Multiply the number of atoms by the atomic mass for each element.
Add up the masses for all of the elements.
1 mole alum KAl(SO4)2• 12 H2O = 474 grams alum KAl(SO4)2• 12 H2O.

Answer 2

Check the periodic table for the atomic masses for each atom in the formula.
Count the number of each type of atom in formula.
Multiply the number of atoms by the atomic mass for each element.
Add up the masses for all of the elements.
1 mole alum KAl(SO4)2• 12 H2O = 474 grams alum KAl(SO4)2• 12 H2O.