Кс=(8,01•10^-4)/(8,314•659,15)

To calculate the value of the expression given, we can use a calculator.

First, we will calculate the numerator: \(8.01 \times 10^{-4}\) = 0.000801

Next, we will calculate the denominator: \(8.314 \times 659.15\) ≈ 5483.2091

Now, we can divide the numerator by the denominator:

\(0.000801 \div 5483.2091 ≈ 1.46 \times 10^{-7} \)

Therefore, \(K_c ≈ 1.46 \times 10^{-7}\)