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My name is actually from a completely different background as in its origin

it's my nickname

I am grateful for these study periods lol

I thought the same thing

From aus, but Mediterranean

Np ^^

okay then. Thankyou

Automatically, you can see that : 1. (h+3i)^2 = (h+3i)(h+3i) - don't bother expanding there is no need 2. then you have - 49j^2 . You take the square root of 49 which is 7. Therefore, this is equal to : - (7j)^2 . The negative sign is really important. What happens is you end up with an...

Okay, but do we need to know this for yr 12 as well?

does this also come up under yr 12 chem?

Aha thanks! you're really good at explaining chem concepts

Do we use the formula: n (moles) = V/STP or SLC by any chances. I don't know what to do first actually

Take into consideration if u get marked on the difficulty of the experiment (I remember we did)

Thanks Integrand. Can you give an exemplar of a question that may relate to this?

I had the exact same assessment task. It was actually quite fun

OKAY so I made this thread for anyone who has questions about prelim chemistry ^^ Also for any challenging questions as well . :idea: I guess I'll start off with asking if anyone can explain the Gay Lussac's law with a given example

haha, okay then. I guess i'll memorise them

Do we have to memorise all the common polyatomic ions, or are they usually given in exams?

Thankyou! I have been using this formula 2n^2, but obviously incorrectly

is the electron configration for silver 2,8,8,28,23? I am trying to find out how to work out what silver Iodide compound formula would be.