Hi I'm in Chemistry too this year,
I believe D is correct because usually physical changes are things like density, color or quantity.
Answer:
pH of HNO₃ having an hydrogen ion concentration of 0.71M is 0.149
Explanation:
HNO₃ (aqueous) ⇄ H⁺ + NO3⁻
The pH is defined as the negative log of the hydrogen ion concentration
pH = - log [H⁺]
From the question, the hydrogen ion concentration is given as 0.71M, therefore
pH = -log [0.71]
= 0.149
Answer:
i going to be aniston i would say take a gess
The answer is 14.22 mg / (mm^2)
