Multiple Choice
What is the molar mass of Ca(OH)_2?
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2. Atoms & Elements
Calculating Molar Mass
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Which of the following is the molar mass of gold (Au)?
A
55.85 g/mol
B
65.39 g/mol
C
196.97 g/mol
D
107.87 g/mol
Verified step by step guidance1
Understand that the molar mass of an element is the mass of one mole of its atoms, usually expressed in grams per mole (g/mol).
Locate gold (Au) on the periodic table, which provides the atomic number and the atomic mass of the element.
Identify the atomic mass of gold (Au) from the periodic table, which is typically found below the element symbol.
Recognize that the atomic mass value on the periodic table corresponds to the molar mass in g/mol for that element.
Match the atomic mass of gold (Au) to the given options to determine the correct molar mass.
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