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OCR A-level Chemistry B (Salters) Paper 1 - 10th June 2025 [Exam Chat]

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Reply 300

jaz231567

Original post

by veuofn

gas syringe set up cause it was a gas

oh i forgot about that. i put measuring cylinder 💔

Reply 301

anonymoussyy

Guys how much u think i would get for putting 30 for the pv=nrt cuz i forgot to x2 from the ratio💔

Reply 302

cheska15

Original post

by Persephonetal

Hi how did u guys read the mRNA question (I read it as how is mRNA made but my friend said it was about what happens after mRNA is made) I think I read the question wrong as I’m really dyslexic :frown:

i just put both transcription and translation in😭 i didnt know either

Reply 303

Persephonetal

Original post

by cheska15

i just put both transcription and translation in😭 i didnt know either

Okay thank you, I probably should have done that lol

Reply 304

veuofn

was the transfer between separators Li+ and H+?

Reply 305

veuofn

for the 3D structure I said tertiary structure instead of active site. Would that be correct? i don’t see y not

Reply 306

veuofn

Was the students mistake the electrode and salt bridge? i said use a Pt electrode

Reply 307

samuellawson01

Original post

by veuofn

Was the students mistake the electrode and salt bridge? i said use a Pt electrode

I said salt bridge yeah and use a carbon electrode because it says carbon electrodes are used in vanadium half cells in VRFBs but i dont know if thats right or not

Reply 308

samuellawson01

Original post

by samuellawson01

I said salt bridge yeah and use a carbon electrode because it says carbon electrodes are used in vanadium half cells in VRFBs but i dont know if thats right or not

Says on the article

Reply 309

chemmlover4eva

Original post

by samuellawson01

Says on the article

oh my days i shouldve acc read the article i was so confused on that

Reply 310

chemmlover4eva

Original post

by veuofn

for the 3D structure I said tertiary structure instead of active site. Would that be correct? i don’t see y not

i think it would have to be active site bc thats specifically where the substrate binds to whereas tertiary structure influences shape of the entire enzyme, including the active site, but active site more specific

Reply 311

veuofn

Original post

by samuellawson01

I said salt bridge yeah and use a carbon electrode because it says carbon electrodes are used in vanadium half cells in VRFBs but i dont know if thats right or not