Cambridge Chemistry Challenge

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Reply 2960

Bengleave

Original post by droplet739

Finished! Feel free to message for hints.

Just need some hints if you're willing!

Reply 2961

fizzers

Original post by Bengleave

Just need some hints if you're willing!

Which do you need hints for?

(edited 9 years ago)

Reply 2962

Bengleave

Original post by fizzers

Which do you need hints with?

gold, it's a pain :frown:

Reply 2963

fizzers

Original post by Bengleave

gold, it's a pain :frown:

Ah, I remember that one! I would've been stuck on that for years if Droplet hadn't helped me! :redface:

You have to find the mass of SO2 produced first, then find out how much 5ppm is (mass per meter^3). Once you have that, find the maximum mass allowed in the room (which is less than a kilo) and find the length!

Reply 2964

fizzers

Original post by reecieboyblue

Really easy one, what's the current bronze, thought it was easy, typed it everything i thought would put the electronegativity to 0.46 and still nothing !

E_cellmeans the emf across the half-cells in thermodynamically reversible conditions, conserved charged etc., not electronegativity!

A simple google search mentioning the copper half cell and voltage should give you the answer :smile:

Reply 2965

amtheril

Hey Reecieboyblue.. is that the one with four gentlemen of science.... have you found there names? If so think about the background and what it could mean...(or where you may have seen it)

Reply 2966

fizzers

Original post by reecieboyblue

Anyone who fancies giving me a hand on this months silver would be amazing, literally can not find anything on a couple of the dates given !

The background image is super important! Do you recognise any of the scientists? (If not, reverse google image is your best friend) Find what the dates are for :smile:

Reply 2967

fizzers

Original post by reecieboyblue

Thank you ! Can't believe i didn't realise !

No worries! Glad that helped :biggrin:

Reply 2968

Nat_LPS

What I totally forgot it has started back
Lots of scrolling ahead of me...

Posted from TSR Mobile

Reply 2969

oadf

Have you got to the gold? I hate the calculation questions, can never seem to get their answer... am I close with 18750?

Reply 2970

oadf

Original post by fizzers

The background image is super important! Do you recognise any of the scientists? (If not, reverse google image is your best friend) Find what the dates are for :smile:

reverse google image doesnt work for those without a lot of cropping and hasstle- I went for the guy on the top left, if you have done/doing A level you may have heard of him... but like you say, background! :smile:

Reply 2971

oadf