The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

F321 27th May 2016

Scroll to see replies

Reply 20
Avatar for SamH213
SamH213
1
Original post by bigzman123
Na
Si - not sure if correct
Na - lowest ionisationenergy = lowest boiling point


Neon not sodium!
Reply 21
Avatar for sqr00t
sqr00t
2
Original post by Rebeecccaahh
wasn't the molecules or something equal to 5.117 x 10^20?? then divided by avo constant??


I dont remember the exact value, 2 looks like a 5 in my memory i guess, but if thats the value then thats what i used, i do remember the magnitude tho.
Original post by samh213
sodium silicon and neon


yas yas yas i wrote the same
Reply 23
Avatar for Goshe
Goshe
4
Original post by Roz96
What was the last cross and dot diagram ?


Posted from TSR Mobile


I swapped the numbers to charges on the opposite ion and then balanced it out.
Reply 24
Avatar for Goshe
Goshe
4
Original post by bigzman123
Na
Si - not sure if correct
Na - lowest ionisationenergy = lowest boiling point


I put Ne for lowest boiling >.< because simple bonding structure. I don't know anymore
Original post by sqr00t
I dont remember the exact value, 2 looks like a 5 in my memory i guess, but if thats the value then thats what i used, i do remember the magnitude tho.


i think you then times that answer by 2 as it is in N2 moecule, explains the two marks
Reply 26
Avatar for SamH213
SamH213
1
No... It is neon
(edited 7 years ago)
Original post by Goshe
I put Ne for lowest boiling >.< because simple bonding structure. I don't know anymore


Yh your right, forgot about that the bonding
Original post by SamH213
Sorry but i got it wrong! Nirtogen has a greater atomic radius->weaker van der waals so lower boiling point, my mistake :frown:


no need to apologise :smile:, oh well! hopefully that's the only one mark you've lost
Original post by SamH213
I got 1200, 0.120, 8.5x10^-4 or x10^-3, 66.44 for the calculations that i can remember and i wrote hourglass shape! Dumbell and figure 8 didnt cross my mind at the time!


Yup got those answers, what was the question where 8.5x10^-4 was the answer, i forgot
Reply 30
Avatar for SamH213
SamH213
1
Original post by Rebeecccaahh
no need to apologise :smile:, oh well! hopefully that's the only one mark you've lost

Haha no i was right the first time, its neon -.-
Original post by abbey1
I got 1.7 x10 to the power of -3 for the amount of nitrogen one???


Yesss, did you times the value by two
Was the reaction disproportionation?

Posted from TSR Mobile
Reply 33
Avatar for SamH213
SamH213
1
Original post by bigzman123
Yup got those answers, what was the question where 8.5x10^-4 was the answer, i forgot


It was 5.117x10^20 atoms of something socu just divide by avogadros constant
For the decomposition reaction. It says It was redox

Posted from TSR Mobile
Reply 35
Avatar for SamH213
SamH213
1
I wrote disproportionation, it went from +3 to +2 and +4 im pretty sure
What was up with that long 5 marker as well? :facepalm:

Posted from TSR Mobile
What was the reaction?
Reply 38
Avatar for abbey1
abbey1
1
Original post by bigzman123
Yesss, did you times the value by two


yeah!! to convert from molecules to atoms
Reply 39
Avatar for KaylaB
KaylaB
20
Original post by Rebeecccaahh
wasn't the molecules or something equal to 5.117 x 10^20?? then divided by avo constant??


Then don't you divide by 2 because it was an Nitrogen molecule which is N2 and it asked for atoms?

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you