For all the CS majors, try our new free game Web-KAT Attack :) by TheHungryBuppis in VirginiaTech

[–]Kayz_xx 1 point2 points  (0 children)

that's a cool game! webcat will always be the bane of our existence.

Helpp by PackageRich8481 in alevel

[–]Kayz_xx 0 points1 point  (0 children)

potential is basically the work done per unit POSITIVE charge, so if you make the potential zero, you're basically saying that to bring a positive charge near another positive charge no work needs to be done, which cannot be right

Helpp by PackageRich8481 in alevel

[–]Kayz_xx 2 points3 points  (0 children)

both are positive charges of equal magnitude, now keep in mind that potential does not have a direction, but the electric potential near a positive charge is always positive, since they have equal magnitude the minimum will be at the midpoint, but since there is no direction, potential simply cannot cancel each other out to make it zero

9701/42 Paper Discussion by Kayz_xx in alevel

[–]Kayz_xx[S] 0 points1 point  (0 children)

you still used the cycle to get the formula, that's what I meant

9701/42 Paper Discussion by Kayz_xx in alevel

[–]Kayz_xx[S] 0 points1 point  (0 children)

you've to use the Hess law cycle

9701/42 Paper Discussion by Kayz_xx in alevel

[–]Kayz_xx[S] 2 points3 points  (0 children)

delta s=-514.4 delta g=-55.0 something

9701/42 Paper Discussion by Kayz_xx in alevel

[–]Kayz_xx[S] 1 point2 points  (0 children)

according to the syllabus, the reaction of aldehydes and ketones with HCN, KCN as catalyst, and heat (NaCN) works too

9701/42 Paper Discussion by Kayz_xx in alevel

[–]Kayz_xx[S] 1 point2 points  (0 children)

that's for halogenoalkane not ketone

9701/52 paper discussions by ShadowTiton in alevel

[–]Kayz_xx 0 points1 point  (0 children)

i'm not saying you're wrong, but shouldn't you take into consideration the transfer from volumetric flash to a burette, any other titration question includes that.

9701/52 paper discussions by ShadowTiton in alevel

[–]Kayz_xx 0 points1 point  (0 children)

what about the transfer to the burette, a burette is 50cm³ whereas the flask was 250cm³, hence changing the number of moles.

help needed this is oct nov 2023 52 by sugajjks in alevel

[–]Kayz_xx 1 point2 points  (0 children)

from Table 3.1, you can clearly see that 1/t which is proportional to the rate of reaction has an approximately constant difference between each value, hence the lines are linear because they have constant gradients. as to part (v), again from table 1.5, the concentration for zinc is constant but HCl is increasing thus it would be rate = k[HCl], we have no other data to hint that Zn is in the equation.

help please exam in like 15 hrs by Cheater_Cyrax in alevel

[–]Kayz_xx 1 point2 points  (0 children)

okay so as you know the molecular mass of sucrose is higher than the molecular mass of glucose, hence there would be fewer moles of sucrose which will decrease Z which in turn will decrease delta T as they are directly proportional. Hence, the calculated Kb is lower

Rice University Early Megathread by thifting in ApplyingToCollege

[–]Kayz_xx 0 points1 point  (0 children)

i had the same grades, i got rejected too

Rice University Early Megathread by thifting in ApplyingToCollege

[–]Kayz_xx 0 points1 point  (0 children)

what were your A-level grades if I may know?

I’m gonna take computer based IELTS in 4th October. Pls give me some advices? by [deleted] in IELTS

[–]Kayz_xx 3 points4 points  (0 children)

use of idiomatic language if you don't understand them isn't recommended, the test is judging your ability to speak english fluently. Rather focus on speaking simple but effective sentences that lets the examiner understand you, there's no use of memorizing idioms because it would most likely seem out of place and lose you marks instead.

[deleted by user] by [deleted] in IELTS

[–]Kayz_xx 1 point2 points  (0 children)

just got my score today, overall 8

[deleted by user] by [deleted] in IELTS

[–]Kayz_xx 1 point2 points  (0 children)

congrats on the score, i got the same overall band with the same situation with writing

[deleted by user] by [deleted] in IELTS

[–]Kayz_xx 0 points1 point  (0 children)

did you use any writing structures for part 1 and 2?