Answer:
13.301
Explanation:
To calculate the pH of the solution, we must obtain the pOH of the solution as illustrated below:
The dissociation equation is given below
Ba(OH)2 <==> Ba^2+ + 2OH^-
Since Ba(OH)2 dissociate to produce 2moles of OH^-, the concentration of OH^- = 2x0.1 = 0.2M
pOH = - Log[OH^-]
pOH = - Log 0.2
pOH = 0.699
But
pH + pOH = 14
pH = 14 — pOH
pH = 14 — 0.699
pH = 13.301
A) - this is false: atoms are indivisible according to his theory
b) - this is false: just as in the previous point, the reason is that atoms are indivisible according to his theory
c) no, not true
d) - this is true: atoms of the same element are identical according to the theory
1Na 1Cl sodium chloride
1C 2O carbon dioxide
1K 1Br Potassium Bromide
1N 3H ammonia
1Mg 1O magnesium oxide
The simplest whole-number ratio of atoms in a molecule or formula unit is called the empirical formula. The empirical formula is clearly different from the structural formula and the molecular formula. Not all substances that have the same empirical formula have the same molecular formula too.