How many electrons are in 2.86kg of water?

Question

turingtest · Answer

this is chemistry, but here we go...

jamesj · Answer

Nice question

turingtest · Answer

I think I remember how to do these, tell me if I mess up...

jamesj · Answer

(find the molar mass of water; find how many moles of water 2.86 kg is; multiply by Av. number to find the # of molecules; multiply that by the # electrons per molecule)

turingtest · Answer

$$(2.86\times10^3g)(\frac{mol}{18.02g})(\frac{6.02\times 10^{23}molecules}{mol})(\frac{10e}{molecule})$$right?

jamesj · Answer

looks right

turingtest · Answer

Chem was the only AP I got a 3 on :(
but stoichiometry is pretty easy. I got lost by titrations though

anonymous · Answer

Thank you, I know it appears to be chemistry but it is part of my physics 202 HW for Electricity.

turingtest · Answer

Fair enough, makes sense it could be in physics I suppose.

jamesj · Answer

I'm happy to have it the question here! ;-)  
Everyone who studies physics should understand some basic chemistry anyway.