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
A full-time English professor earned an average of $68,760 per year as of May 2011, according to the U.S. Bureau of Labor Statistics. The lowest-earning 10 percent received $33,000 per year or less, and the top 10 percent earned $115,520 or more.our-year colleges, universities and professional schools employed 241,450 English professors as of 2011, making them the largest employer, according to the Bureau of Labor Statistics. These schools paid English professors an average annual salary of $68,730.