Ferric chloride (Iron chloride; FeCl3) reacts with water alkalinity to form an iron hydroxide solid phase. If no alkalinity is present, what will be the pH when 500 mg/L ferric chloride is added to achieve complete coagulation

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space