Chemistry Predictions/Thoughts (1 Viewer)

[carrotsss]

How much/what do we need to know about complex ions/complexation reactions?

not that much

 

[Iceyscreen]

What examples have people remembered for condensation polymers and contrasting fuels from organic sources? I struggle with the long winded questions where you need to write out processes

 

[Iceyscreen]

Could anyone help me with this- answer was A but I keep getting an answer of 4- srry if this is an easy question my brain is melting. Thanks

 

[Masaken]

What examples have people remembered for condensation polymers and contrasting fuels from organic sources? I struggle with the long winded questions where you need to write out processes

PET (polyethylene terephthalate) is my main go to cos it's easier to memorise than nylon and has a benzene ring so i can easily relate it to properties and stuff for that, and for fuels they won't make you ask anything specific, they'll specify for you (it'll just be contrast the benefits and disadvantages of using biofuels and not fuels sourced from hydrocarbons)

 

[Iceyscreen]

PET (polyethylene terephthalate) is my main go to cos it's easier to memorise than nylon and has a benzene ring so i can easily relate it to properties and stuff for that, and for fuels they won't make you ask anything specific, they'll specify for you (it'll just be contrast the benefits and disadvantages of using biofuels and not fuels sourced from hydrocarbons)

Ah okay thanks

 

[Masaken]

View attachment 41149Could anyone help me with this- answer was A but I keep getting an answer of 4- srry if this is an easy question my brain is melting. Thanks

ok so i first calculated it as normal, since you have Ka and [HF] initial you can do an ICE table and then calculating [H+] = [F-] at equilibrium you get x = 0.0081853.... for % of ionisation, you just divide [H+] by 0.1 and multiply that by 100. i got 8.1853...% then just multiply that by 25 since there are 25 dark blocks [i think this is how you do it pls correct me if im wrong]

 

[synthesisFR]

what do u guys have for this dotpoint\
Chemistry Stage 6 Syllabus 2017

• 
  explore acid/base analysis techniques that are applied:
  
  • 
    – in industries
    
  • 
    – by Aboriginal and Torres Strait Islander Peoples
    
  • 
    – using digital probes and instruments
    

 

[Masaken]

what do u guys have for this dotpoint\
Chemistry Stage 6 Syllabus 2017

• 
  explore acid/base analysis techniques that are applied:
  
  • 
    – in industries
    
  • 
    – by Aboriginal and Torres Strait Islander Peoples
    
  • 
    – using digital probes and instruments
    

my school lowkey kinda forced my cohort to self-learn this so i made some notes on this let me look for it

 

[Masaken]

@synthesisFR and anyone else who needs:

 

[synthesisFR]

?

 

[qldbulls]

View attachment 41158
?

It is D?

 

[carrotsss]

View attachment 41158
?

Write out the balanced equations for both dissolutions and then find the [OH-] from each dissolution in terms of [Na+] and [Ba2+] respectively and then add them to find the total [OH]-

 

[carrotsss]

It is D?

the answer is circled yes

 

[synthesisFR]

?

Write out the balanced equations for both dissolutions and then find the [OH-] from each dissolution in terms of [Na+] and [Ba2+] respectively and then add them to find the total [OH]-

i got C

 

[hb0623]

?

i got C

since [OH-] is already 3x the conc of Na+/Ba2+, if you add the concentration of Na+ and 2x the concentration of Ba2+, it's essentially 1+2=3. Since [OH-] is equal to 3, the answer is Na+ + 2(Ba2+) = [OH-] (D)

 

[panikinprogress]

what do u guys have for this dotpoint\
Chemistry Stage 6 Syllabus 2017

• 
  explore acid/base analysis techniques that are applied:
  
  • 
    – in industries
    
  • 
    – by Aboriginal and Torres Strait Islander Peoples
    
  • 
    – using digital probes and instruments
    

cut the nut
put the nut in water
wait for the nut
take out the nut
dry the nut
eat the nut!

 

[rockydo4u]

cut the nut
put the nut in water
wait for the nut
take out the nut
dry the nut
eat the nut!

Yeah….basically.

 

[Unovan]

good luck tomorrow everybody

I'm coming for that mf state rank

 

[its_ace21]

good luck tomorrow everybody

I'm coming for that mf state rank

no ur not

 

[synthesisFR]

ill take a band 2