Recent content by thuynguyen239

i am struggling to find the answer for this oxidation question, can anyone help me please!!! what is the oxidation state of chromium in Na_%7B2%7D%20Cr_%7B2%7DO_%7B7%7D ?? show all the working. THANKS IN ADVANCE!!

thanks a lot!! :)

just wondering that is it possible to get zero after the isotopes decay to half, then continue decay to half of that half.. (keep going to infinity) ?? thanks :))

ive trouble with these questions, can anyone help me, please!! thank you :):):)

thank you :)

can anyone pleaseeeee help me with this question: identify one new metal alloy that has recently been developed (in the last 30 years) and its uses. i have found that from 1970, there are around 10 new metals were discovered, however, none of them can be used!!!!! :mad::mad:

yeah, you r right... in the exam, they often ask about case studies!!

they dont, year 11 just represents for HSC foundation:)

thank you so much!!! :)

Can someone pleaseeeeee help me with this question?discuss the following statements about the modern era: " the improved technology of metal extraction has led to the discovery of more metals"and "the discovery of different properties has opened up new areas of technology". any ideas about this...

could anyone please help me with these tricky questions |3y-1|+ |2y+3|>5 |3y-1|+|2y+3|+|5y-2|>5 THANK YOU!!! :kiss::kiss:

i am doing vietnamese now, i found it is quite a difficult language :argue: