[ski1313]

I'm using MasteringChemistry to do some homework. I need to express it as a chemical formula.

I'm almost postive that Aluminum Nitrate Dihydrate is Al(NO₃)₃ * 2H₂O

But it keeps telling me that I'm wrong. Could someone please help me understand whats wrong? thanks

[ardbeg]

that is correct.  it could also be written as AlH4N3O11

[Borek]

I'm using MasteringChemistry to do some homework.

These systems have some quirks, and if you are new to them quite often it is not problem with your answer, but with convincing the system your answer is actually correct.

Al(NO₃)₃ * 2H₂O

Formula is OK. Check if it is correctly formatted.

[ski1313]

Thanks for the double check!
I figured out how it wanted it formated. AlNO₃*2H₂O
That's not technically correct though. There's a charge deficit... all well. 

[Borek]

I figured out how it wanted it formated. AlNO₃*2H₂O
That's not technically correct though. There's a charge deficit... all well. 

That's not "technically" incorrect. That's blatantly incorrect.