Aluminium sulfate is sometimes referred to as a type of alum. Alums are double sulfate salts, with the formula AM(SO 4) 2Â·12H 2O, where A is a monovalent cation such as potassium or ammonium and M is a trivalent metal ion such as aluminium.luminium sulfate may be made by adding aluminium hydroxide, Al(OH) 3, to sulfuric acid, H 2 SO 4 :
Professors at Yale University make on average $264,496 USD per year. This is $193,103 more than the average university professor's annual salary ($71,393 USD). Salary Over Time
For the academic year 2014-2015, the tuition cost to get a PhD  degree at Yale University is 37,600 US dollars. Further costs would  include housing, transportation, academi â¦ c, personal and medical  which could bring the total expenses up to about 65,000 US dollars.