Search results

with the lead (IV) oxide, can it also be Pb2O4 ?

how do you write a compound when it is something like iron (III) oxide. Does the (III) mean number of oxygen atoms in this case? , and is this the same for all compounds like this? Does this have any relation to oxidation numbers?

1) calculate the theoretical mass of ethanol required to heat 200ml of water from 21.0 degrees c to 45.0 degrees c. (ethanol 1367 KJ/ mole) 2) Calculate the volume of gas produced at 25 degrees c and 100kpa by the reaction of 0.56 g of zinc with 200 ml of hydrochloric acid. if anyone could...

thanks, but will you still be affected alot if the top half of the class is very close with hsc marks but there is a huge gap between the top half and bottom half?

how much does the rank of your school and how people go in your class affect your uai? Say if you end up coming 3rd/4th or 5th in a class that is heaps spread apart in marks with 1st getting 90, 2nd 85 3rd ,83..etc..with 12th getting 48 in the HSC. How are you likely to go then with your...

i guess it depends how much you want the job...they may have forgot about you...id give them a call because youve got nothing to lose.

I forgot how to do this but i want to compare my answer. What mass of ZnSO4 do you need to make 200ml of 1M solution? ////same with CuSO4 Also, with galvanic cells does putting more solution in a half cell effect voltage or current. What other trends are there with galvanic cells and...

( 4x^3+3x^2+5/x^2 dx ) I cant get these sought of ones can someone please help?