Molar Mass of Elements and Compounds

The molar mass of an element is equal to its...

• Atomic mass
• Atomic number
• Oxidation number
• Valence electrons

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

Tags

NGSS.HS-PS1-7

Calculate the molar mass for Al(OH)₃

• 78.0 g/mol

• 72 g/mol

• 28 g/mol

• 25 g/mol

Which of the following is needed to determine the molar mass of a molecule?

• Types of elements in the molecule

• Quantity of elements in the molecule

• Mass of the elements in the molecule

• All are correct and needed.

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

True or False:

The Molar Mass of CaCOH is

69g

• True

• False

Fluorine is diatomic.  What is the molar mass of fluorine gas?

• 18.998 g/mol
• 37.996 g/mol
• 9 g/mol
• 18 g/mol

Extra Credit: What is the Molar Mass of Potassium Sulfide?

• 110.262 g/mol

• 71.164 g/mol

• 174.258 g/mol

• 158.259 g/mol