In a 250.0 g sample of ammonium sulfate, how many moles of ammonium ions are present?

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

If a solution had a ph of 7 what is the solution