Time of Flight Mass Spec - Tackling Maths Questions

AQA A-level Chemistry Mass Spectroscopy. This video goes throug some of the Maths style questions associated with Time of Flight Mass Spectrocsopy.

[Mrh.hckz]

3 marks for that last question is absolutely criminal

[cherrycolagames]

The new chemistry spec is absurd, thank you for this vid!

[mahnoorq]

Now I feel like a genius answering these questions correctly😂 thanksss

[catalyzt]

Thanks man, i was struggling on these before now you've helped me.

[charliethomson]

Thank you Chris - you’re an absolute legend - my G

[emilybishton]

all I can say is thank you. you absolute legend.

[SonikaStudy]

Omg this all clicked thank u sm!! I will check out the rest of your channel! :)

[DCL]

Thank you so much for your help, it's really helped me improve my grades, keep up the good work :-)

[theoneh]

Hey, there’s a slight error at 6:39
The mass of the Cr atom is 8.635 x 10^-28

[neec]

At 11:42 how do you know you have to get to kg? How did you know it Was originally in grams?

[juanmanuelarroyavecortes]

If I have a mass to charge ratio (m/z) value of 58 for an unknown particle, the charge z is 1 and the dimensions for m/z are kilograms per Coulomb (kg/C),
Can it be interpreted that the mass in kg corresponds to one mole of ions with charge z?

Does it mean that to calculate the time of flight of the particle I must first express the mass in kg of that particle and then proceed with the calculation of the time?

[rehnumachowdhury]

U will probably think I'm crazy but u have relieved me from some stress I just hope I dont screw up in the test like I always do

[spareting]

Thank you doctor, I only found this channel now but you have helped me so much I was struggling in class a lot and it feels amazing that I understand 😁

[rachaelm]

Hi, in the last question you said the tht given equation for t is a rearranged version of the KE equation, I don't understand why the distance is being multiplied by √2KE/m and why 2KE and m swap places?

[younushaque]

Shouldn't it be 8.635x10^-28 after you divide by 1000? 7:41

[po_taetooooooo]

Why is the 2KE swapped with the m when u rearrange the equation to get d????

[Fatimaaxoxo]

I'm 13 yrs old and i decided to learn this but actually i learnt this quickly by ur 😄🤓

[jamesshek]

To work out mass you said it's mass per mole but I still don't get why you did 52÷ (per) 6.022×10^23 and how does it give you the mass?

[nadernassr]

Thanks helped alot learnt from scratch didnt understand from school

[saferehman]

Hey, How did you get from square root 1/mass-49 divided by square root 1/mass-47 to square root 47/49 near the end of the last question, i know you subbed in 49/L and 47/L but that still gives square root 1/49 and square root 1/47, sorry if the question is confusing thanks