What’s the answer to number 6 ty!!

0.00032 M

Explanation:

From the question,

Applying the for pH

pH = -log[H⁺] Equation 1

Where H⁺ = Hydrogen ion concentration of Hydrochloric acid

Given: pH = 3.50

Substitute into equation 1 and solve for H⁺

3.50 = -log[H⁺]

Taking the log inverse of both side,

H⁺ = 10⁻⁽³⁵/¹⁰⁾

H⁺ = 0.00032 M

Hence the H⁺ of Hydrochloric acid is  0.00032 M

it is stable as it is in group 0 which have full outer shells of electrons