객관식
Which conversion factor should be used to convert 3 moles of magnesium (Mg) to grams?
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2. Atoms & Elements
Calculating Molar Mass
객관식
What is the molar mass of Cl (chlorine) in grams per mole?
A
32.07 g/mol
B
40.08 g/mol
C
18.99 g/mol
D
35.45 g/mol
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검증된 단계별 안내1
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).
Recognize that chlorine (Cl) exists naturally as a mixture of isotopes, primarily Cl-35 and Cl-37, which affects its average atomic mass.
Refer to the periodic table to find the average atomic mass of chlorine, which accounts for the relative abundance of its isotopes.
Note that the average atomic mass of chlorine is approximately 35.45 g/mol, which represents the molar mass of chlorine atoms.
Conclude that the molar mass of chlorine (Cl) is 35.45 g/mol, which is the value used in stoichiometric calculations involving chlorine.
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