Who can answer this please (+) : Cl- ions in 13.4 g of nickel chloride (NiCl2)

[tarek]

with working out! I already know the answer.

[kenhung123]

n(Cl-)=2n(NiCl2)=13.4/M(NiCl2)

[kakar0t]

n(NiCl2)= 13.4g/129.71gmol-1
n(NiCl2)=0.103mol
n(Cl-) = 2 x n(NiCl2) =0.207 mol
N(Cl-) = n(Cl-) * avagadros constant
N(Cl-)= 0.207 mol * 6.023 * 10^23
N(Cl-)=1.24*10^23 Cl- ions

[tarek]

thank you! how do you reward some one?

[iNerd]

thank you! how do you reward some one?

Karma requires 50 posts.

[sanam]

yeah i was wondering how this karma stuff works, cos im a newbie would someone like to explain! thanks! :angel: