What is the chemical formula for ammonium sulfate?

Would I write all Group 7 elements like this: Cl(2)? F(2)? etc. Well any info on Group 7 elements would be helpful, so anythi...

Anyone know what the chemical contents of Kalachuchi leaves are???

Can you guy give me a cuple Polyatomic Ion Formulas?

is it safe to burn these chemicals listed and is there any respiratory harm to people or animals? There are all these chemic...

how can we recognize physical and chemical changes (for science lab please help!)

I really need some help on this. Im studying for a chemistry test and so im redoing some of the exercises we did in class, bu...

What are the chemical equations for burning fossil fuels in power stations, e.g. coal. ?

what are the properties of physical and chemical changes individually

Can anyone show me how to re-arrange this physics formulae? s=ut+½at² I want 't' as the subject of the formulae. Cheers.

Why does chemical weathering occur more quickly in a hot climate? Can anoybody help me out here im trying to do my homework a...