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
In 2013 professors at Harvard University had an average nine month salary of $205,504. This is $2,124 less than professors earned in 2012, the most recently reported prior year, and a 1.0 percent decrease in earnings in comparison to the previous year's average nine month salary ($207,628).rofessors at Harvard University make on average $205,504 over the course of nine months, the typical contract for an academic year. This is $154,498 more than the average university professor's nine month salary ($51,006).