Which of the following reactions represents a precipitation reaction? A. CoCl2(aq) + Na, so,(aq) → Coso (aq)+2NaCl(aq)
B. AgNO, (aq) + KCI (aq) → AgCl (s) + KNO3(aq)
C. HNO3(aq) + NaF(aq) → HF(aq) + NaNO3(aq)
D. AgNO3(aq) + NaCl (s) → AgCl (aq) + NaNO3(aq)

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Which statement best describes the function of enzymes?

What is the atomic number of an atom that has 6 protons