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Chemistry 10 Online
OpenStudy (summersnow8):

1

OpenStudy (caozeyuan):

Ok, so how many Hg2+ are there in 1mol of Hg2(NO3)2

OpenStudy (summersnow8):

there are 2 Hg

OpenStudy (caozeyuan):

And how about NO3? still 2 right?

OpenStudy (caozeyuan):

And it is simple math from now

OpenStudy (summersnow8):

you are correct

OpenStudy (summersnow8):

what do you mean? simple math

OpenStudy (caozeyuan):

if you have N mol of a molecular in 1mole of solution solution, how many moles are there in .5M, how about .05M?

OpenStudy (summersnow8):

would it be, if they have a 2:2 relationship.... they would both be the same at 0.05M ?

OpenStudy (caozeyuan):

of cuz

OpenStudy (caozeyuan):

oh! so 3 of 5 are gone now!

OpenStudy (summersnow8):

I guess the answer is the 1st one, but i don't get why

OpenStudy (caozeyuan):

well, I am going to say it explicitly now. 0.05*2=0.1, get it?

OpenStudy (summersnow8):

so because each has 2 moles.... you multiply the moles by the 0.05 M, each one is .1 that means the answer is the 3rd choice

OpenStudy (caozeyuan):

Exactly

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