1. If two moles of ZnCl2 separate into Zn+ and Cl- ions, how many moles of Zn+ ions are present?
2. How many moles of NO3- are present in one mole of Mg(N03)2?
The answers to both of these are 1 mole, right?
No, neither is right.
is it 2?
Yes, you are correct.
To explain how we arrive at the answers:
1. If two moles of ZnCl2 separate into Zn+ and Cl- ions, it means that each ZnCl2 molecule dissociates into one Zn+ ion and two Cl- ions. So, from two moles of ZnCl2, we will have two moles of Zn+ ions.
2. In the compound Mg(NO3)2, there are two nitrate ions (NO3-) for every one magnesium ion (Mg2+). Therefore, in one mole of Mg(NO3)2, we will have two moles of NO3- ions.
So, the answer to both questions is indeed 1 mole.