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20) Please fill in the blanks given below with appropriate words or phrases. (5P) a) A is a polyatomic ion composed of a central metal ion bonded to two or more molecules or ions called ligands. b) Solutions that resist changes in pH upon the addition of small amounts of an acid or base are referred to as . c) In reactions between ions and water, , the ions react as weak acids or weak bases. d) An is assessed over an infinitesimal time interval at any point in the reaction, often through the slope of a tangent line to a graph of concentration versus time. e) The intermolecular forces that occur between molecules are collectively known as .

          20) Please fill in the blanks given below with appropriate words or phrases. (5P)
a) A ________ is a polyatomic ion composed of a central metal ion bonded to two or more molecules or ions called ligands.
b) Solutions that resist changes in pH upon the addition of small amounts of an acid or base are referred to as ________.
c) In reactions between ions and water, ________, the ions react as weak acids or weak bases.
d) An ________ is assessed over an infinitesimal time interval at any point in the reaction, often through the slope of a tangent line to a graph of concentration versus time.
e) The intermolecular forces that occur between molecules are collectively known as ________.

20) Please fill in the blanks given below with appropriate words or phrases. (5P)
a) A is a polyatomic ion composed of a central metal ion bonded to two or more molecules or ions called ligands.
b) Solutions that resist changes in pH upon the addition of small amounts of an acid or base are referred to as .
c) In reactions between ions and water, , the ions react as weak acids or weak bases.
d) An is assessed over an infinitesimal time interval at any point in the reaction, often through the slope of a tangent line to a graph of concentration versus time.
e) The intermolecular forces that occur between molecules are collectively known as .

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