Assertion: barium sulfate's formula | /r/HasProperty | k 2 al
Facets:
Source sentences:
text: O and white vitriol is zinc sulfate heptahydrate, ZnSO 4 ·7H 2 O. Alum, a double sulfate of potassium and aluminium with the formula K 2 Al 2 (SO 4 ) 4 ·24H 2 O, figured in the development of the chemical industry.