Ionic Lewis Dot Structure for BaF2, hope this helps.
A quantity of property that must be transferred to body to the physical system to perform work
The correct option is C. The amount of MgCl2. we know this because <span>no matter how much you increase KOH, if you dont increase Mgcl2, the amount of Mg(OH)2 remains the same. Hope this works for you</span>