Official AQA AS Chemistry Unit 1 - 23Rd May 2013

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Reply 580

Tynos

Original post by jodie.irwin27

omg dude your relplies are hilarious, srsly.

pphahhaha, i iz funny guy :P

Reply 581

NabRoh

Original post by loknath

what did you get as teh catalyst? i put zeolite

Whaat? It was for a catalytic converter, so Platinum etc.

Reply 582

anonymouspie227

Original post by loknath

what did you get as teh catalyst? i put zeolite

rhodium

Reply 583

1144876

Original post by gooner1886

Ions are deflected onto the detector by the magnetic field, this generates current.
The more ions that hit the detector, the greater the current generated.

I just said they hit the detector, accept electrons and cause a current to flow, proportional to the abundancy of the isotope

Reply 584

jodie.irwin27

Original post by loknath

what did you get as teh catalyst? i put zeolite

its rhodium or platinum,

you gave the catalyst for industrial cracking :/

Reply 585

NabRoh

Original post by nich01as

I just said they hit the detector, accept electrons and cause a current to flow, proportional to the abundancy of the isotope

They gave you the proportional part in the question.
Hmmm :s-smilie:

Reply 586

Sam96

Unofficial Mark Scheme From what we rembember KeAston FTW

Define Ar

72.4

Ge+

70 got defelcted most as its lightest, least mass/ charge

Define Structual Isomers

State the positional isomer
But-2-ene

State the chain isomer
2 methyl prop-1-ene

Draw Fucntional Isomer
Drawing of a Cyclic HC with 4 Carbon and 8 H

C4h8 + 202 = 4C + 4h20

Global dimming, Breathing Problems, Smog

c16h34

used for fuel or road surface (not sure)

Carbon has the largest atomic radius

oxygen deviates 2 electrons in p orbital, they repel

Lithium has the greatest second ionisation energy

Second ionisation energy tick box

Al + 3/2 Cl2 = alcl3 accept multiples

Dative/ Coordinate bond

pair electron donated from chlorine

267

Nh4- / SiCl4

draw hydrogen bonding between water and nh3, simple

C3H or C4H or CH

Trigonal Bipyramidal

Linear

No lone pairs 2 bonding pairs equally repel

Calculations

x = 7

8.184g

90.3% purity

2 bromo 2,3 Dimethyl Butane

CnH2n+1Br

More points of contact, larger surface area, more packing, more van der waals

Ef= c2h4cl

Sam, Arjun and Kulraj :biggrin: