What is the ph of a sodium acetate (nac2h3o2) solution prepared by adding 0.820 grams of sodium acetate to 100.0 ml of water at 25.0 °c? the ka at 25.0 °c for acetic acid is 1.8 ⋅ 10-5?

According to the reaction equation:
CH3COONa+ H2O ↔ CH3COOH + OH-
when we have 0.82 g of sodium acetate in 100 mL
So we have 8.2 g per liter & when we have the molar mass of CH3COONa=82 g/mol
we have to get the molarity of CH3COONa = weight/molar mass
                                                                        = 8.2 / 82 =0.1 M
So                   CH3COONa + H2O ↔ CH3COOH + OH-
initial c              0.1                                       0               0 
equilibrium C (X-0.1)                                     X               X
when Kb= Kw / Ka and we have Kw = 1x10^-14 & Ka = 1.8x10^-5
So Kw/Ka = [CH3COOH][OH-] / [ CH3COONa]
(1x10^-14)/(1.8x10^-5) = X^2 / (X-0.1)
5.6x10^-10 = X^2/(0.1-X)
5.6x10^-11  - 5.6x10^-10 X = X^2
∴X= 7.48x 10 ^-6 ∴[OH] = 7.48x10^-6 M
when POH = -㏒[OH]
                   = -㏒(7.48x10^-6) = 5.13
∴PH = 14 - POH = 14 - 5.13 = 8.87 

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.