anonymous
  • anonymous
#1: Which of the following parts of a dry cell corresponds to the salt bridge shown in the diagram attached inside? A. graphite rod B. paste C. cardboard separator D. solid zinc layer **my answer: D i'm not 100% sure though.. what do u think @aaronq :)
Chemistry
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katieb
  • katieb
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anonymous
  • anonymous
diagram for 1!
aaronq
  • aaronq
nooo the Zn is your anodic electrode :)
aaronq
  • aaronq
whats the stuff inside the inverted U-shaped tube?

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anonymous
  • anonymous
aww darn :( err idk really.. :/ its not labeled :( it just says Na+ and SO4^2- :/
aaronq
  • aaronq
haha i guess they don't really tell you this, it's a paste, kinda like jello
anonymous
  • anonymous
ohhh i see... haha i like jello :) so does that mean the answer to this is B. paste ? :/
aaronq
  • aaronq
haha me too.. but you don't wanna know what it's made out of haha
aaronq
  • aaronq
haha yeah, it's "B. paste", iknow very scientific
anonymous
  • anonymous
oh i know what its made of,... its kinda gross :/ so i don't eat it anymore... but if i want, i use agar agar base (it's like seaweed stuff or something haha no gross stuff inside!) and make jello-like stuff.. but i usually want something creamy :) or chocolatey :P haha and gelatin is kinda the same too :/ eww :/ hehe lol very scientific :P one sec while i put the next one up!! :D
anonymous
  • anonymous
#2: During the electrolysis of brine, where does the hydrogen in the hydrogen gas come from? A. water B. the battery C. chlorine D. sodium ***not sure.. i think it's either A or C... but idk which!! what do u think? :D
aaronq
  • aaronq
ohh cool, i like pudding lol C ? how could it come from the chloride (Cl-) !! lol definitely from the dihydrogen monoxide
anonymous
  • anonymous
ohh haha so it's A. water then??
anonymous
  • anonymous
thats a reallyyy fancy way to say H2O lol :P i had to google that lol :P never heard of it before.. lol but i guess it means 2 hydrogens and 1 oxygen molecule :P
aaronq
  • aaronq
haha it's the IUPAC form. but yes, definitely from the water
anonymous
  • anonymous
last one for this post (getting crowded!! LOL) Which of the following anode-cathode combinations would NOT produce a voltaic cell with high voltage? **see table attached!!** A. Li, Fe B. Ca, Ni C. Al, Cu D. Au, H **my answer; C is that right?
anonymous
  • anonymous
wow, that's some fancy stuff hehe :P i'll try to remember that for the future, but idk if i can :P water is always water to me... or on the occasion H2O and agua :P
aaronq
  • aaronq
oh no, you know for the other question when we said electrons flow from lower higher activity metals to higher activity metals, it's the other way around !
anonymous
  • anonymous
okay i see :) idk how to do it for this problem tho :(
aaronq
  • aaronq
the question is basically asking you which ones are the furthest apart on the list, since a greater distance means higher difference in reduction potential, (potential energy = voltage)
aaronq
  • aaronq
i mean which one is closer together, closer = less voltage, further = more voltage
anonymous
  • anonymous
oh oaky.. so would it be Au and H?
anonymous
  • anonymous
cuz they're 5 apart ? :/ is that right? it's D. Au, H ??
aaronq
  • aaronq
since there are no values (there should be), thats what i would say.
anonymous
  • anonymous
okay! awesome :) thanks!! : i'll post the next ones in a new one now! :D
aaronq
  • aaronq
okie!
anonymous
  • anonymous
okay! awesome :) thanks!! : i'll post the next ones in a new one now! :D

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